EP3495068B1 - Framework linking device - Google Patents

Framework linking device Download PDF

Info

Publication number
EP3495068B1
EP3495068B1 EP18000683.5A EP18000683A EP3495068B1 EP 3495068 B1 EP3495068 B1 EP 3495068B1 EP 18000683 A EP18000683 A EP 18000683A EP 3495068 B1 EP3495068 B1 EP 3495068B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
threaded
steel
nut
bars
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18000683.5A
Other languages
German (de)
French (fr)
Other versions
EP3495068A1 (en
Inventor
Edgar Henri Gérard Albert Thirion
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP3495068A1 publication Critical patent/EP3495068A1/en
Application granted granted Critical
Publication of EP3495068B1 publication Critical patent/EP3495068B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F15/00—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire
    • B21F15/02—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with wire
    • B21F15/06—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with wire with additional connecting elements or material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/64—Making machine elements nuts
    • B21K1/68—Making machine elements nuts from round or profiled bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/08—Shaping hollow articles with different cross-section in longitudinal direction, e.g. nozzles, spark-plugs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162—Connectors or means for connecting parts for reinforcements
    • E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
    • E04C5/165—Coaxial connection by means of sleeves

Definitions

  • the present invention relates to a sleeve for the end-to-end connection of two threaded fittings, to a connecting device comprising such a sleeve and to a set of fittings, and to a set of fittings made with such a sleeve.
  • the technical field of the invention is that of the manufacture of steel reinforcements for reinforced concrete.
  • DE10013581A1 describes a sleeve according to the preamble of claim 1.
  • the invention applies in particular to end-to-end connection devices for two steel reinforcing bars whose ends are threaded, which comprise a threaded sleeve which is screwed onto the threaded ends of the reinforcing bars to be joined.
  • the invention makes it possible to obtain such a sleeve, the outer surface of which has roughness reinforcing the adhesion of the concrete - in which the sleeve is intended to be embedded - on the sleeve.
  • This cohesion results in particular from the adhesion of the concrete to the reinforcements. This requirement is reinforced for structures that have to withstand significant dynamic stresses, such as shocks or vibrations, throughout the lifetime of the structure.
  • Such reinforcing bars are the subject of various prescriptions and standards such as the NF-A-36-016-1 and EN10080 standards, which define in particular the alloys - or grades - of steel usable for the manufacture of these reinforcements. , the mechanical characteristics of these steels, and the geometric characteristics of the reinforcements.
  • the bars - or frames - of this type have asperities on their outer surface, which can be protruding and qualified as “locks”, or on the contrary hollow and then qualified as “fingerprints”.
  • connection sleeves does not make it possible to choose the steel grade, the bar diameter, and the geometry of the asperities, which are necessary to obtain connection sleeves. optimized according to the constraints specific to each use of these sleeves in a work to be built.
  • the sleeve thus obtained which comprises a partition separating the two cavities, is then shrunk on the ends of two reinforcing bars to be assembled, this shrunk causing the formation of ribs on the external face of the sleeve.
  • a disadvantage of this method is that the partition makes it difficult to obtain a uniform shrinkage over the length of the sleeve, and that the rigidity of the connection formed by shrinking between the sleeve and the bars is difficult to control, in particular when the shrinking is carried out with a portable tool. Also, deleting this partition would require an additional operation.
  • the shrinking of the wall of the sleeve does not make it possible to perfectly control the position and the depth of the external ribs intended to “lock” the sleeve to the concrete which surrounds it.
  • An object of the invention is to provide a sleeve for end-to-end connection of two steel reinforcements, and a connection device incorporating such a sleeve, whose resistance to tensile forces and adhesion to concrete are improved.
  • An object of the invention is to propose a set of reinforcements produced with such a sleeve, which is improved and/or which remedies, in part at least, the shortcomings or drawbacks of known systems for connecting reinforcements.
  • connection sleeve making it possible to ensure the end-to-end connection of two threaded fittings, which comprises a substantially tubular steel body which is internally threaded; the body is provided with an uninterrupted central rib which acts as a lock and extends (continuously) along a circumference of the body; the central rib is lined on either side with indentations (or grooves), and has a variable width - i.e. not uniform along the circumference -; thus, the resistance of the sleeve to tensile forces as well as the adhesion of the sleeve to concrete are improved.
  • the cavities bordering the central rib extend along portions of helices having as their axis the longitudinal axis of the sleeve.
  • the body is further provided with two uninterrupted end ribs which also act as a lock and each extend (continuously) along a (entire) circumference of the body, from - and at vicinity - of one of the two longitudinal ends of the body, these two ribs each having a variable width.
  • a device for connecting two threaded fittings which comprises a sleeve according to the invention and one or two nut(s) provided with an annular portion - which is arranged to come to rest against an end face of the sleeve -, and if necessary a flared portion (substantially frustoconical) which extends from the annular portion; the flared portion may be provided with indentations (or notches) at its periphery—on its outer face—so that the adhesion of the nut to the concrete is improved.
  • the thinning of the wall of the nut - in line with the flared portion - makes it possible to avoid the formation of incipient cracks in the concrete in contact with the nut and the end of the sleeve, in particular when the concrete structure in which the sleeve and the nut are incorporated is subjected to significant mechanical stresses, such as shocks or vibrations.
  • the device comprises two steel nuts which are generally substantially identical, each nut being provided with an annular rib and a flared portion which extends from the annular rib, the flared portion being provided with indentations on its periphery, so that the adhesion to the concrete of the parts of the device is improved.
  • the connecting sleeve - and/or the nuts - can be manufactured by machining a tube - or tubular blank - in steel, the diameter and steel grade of which are adapted to the characteristics of the sleeve ( and/or nuts) to be manufactured, which makes it possible to optimize the geometric and mechanical characteristics of the sleeve and/or of the nuts, and to reduce energy and material losses.
  • the connecting sleeve - and/or the nuts - can also be manufactured by forging a blank or blank.
  • forged couplers/sleeves exhibit increased resistance to fatigue and fracture, with a steel fiber structure retained during the forming process.
  • Forging can also make it possible to eliminate certain weak points such as cracks or cracks present in the steel used for the manufacture of the couplers.
  • the asperities can extend along portions of circles located in planes perpendicular to the longitudinal axis of the sleeve.
  • the asperities can also extend along portions of helices having as their axis the longitudinal axis of the sleeve.
  • the asperities may have a smooth surface extending along a cylindrical cap; this cap may be delimited by a diamond-shaped outline, or else may be delimited by a curvilinear outline, at least in part.
  • the largest dimension of these asperities is preferably greater than one millimeter, for example of the order of one or more centimeters, while the depth (of recessed asperities) or thickness (of raised asperities) is the order of one or more millimeters.
  • the blanks for these parts may also be subjected to annealing, deburring and/or shot-blasting operations.
  • a set - such as a cage - of reinforcements for concrete, which comprises two steel reinforcing bars whose threaded ends are screwed into a sleeve according to the invention, the sleeve having forged asperities on its face external, two forged steel nuts provided with indentations which can be respectively screwed onto the ends of the two bars, resting respectively against the two longitudinal end faces of the sleeve.
  • the threading of the ends of the bars can have a rounded profile and be obtained by rolling.
  • a structure - such as a cage - reinforcement for a reinforced concrete work may require the butt connection of two steel reinforcing bars.
  • the respective threaded ends 51, 52 of two bars 25, 26, which are placed facing each other, can be linked only by a threaded sleeve, or else by a connecting device 50 incorporating, in addition to a sleeve 20, 23 tapped, one or two nuts 71 as shown figures 7 to 10 .
  • each threaded part 51, 52 of the bars 25, 26 is at least equal to the sum of the thickness of a nut 71 and the half length of the threaded sleeve 20, these dimensions being measured along the longitudinal axis 49 common to bars, nuts, and sleeve.
  • the mutual connection of the bars 25, 26 is obtained by screwing a nut 71 then a sleeve 20 on the end of the bar 25, by screwing a nut 71 on the end of the second bar 26 (cf. figure 7 ), then by screwing the bar 26 into the portion of the threaded part of the sleeve 20 which has remained free, to arrive at the configuration of the figure 8 .
  • a rigid mutual connection of the bars, the nuts, and the sleeve 20 is obtained by tightening the two nuts 71 respectively against the two longitudinal ends of the sleeve 20.
  • the threaded part 51 of the bar 25 illustrated figures 9 and 10 is longer so that, as shown figure 9 , a nut 71 and almost all of the sleeve 23 can be engaged (screwed) on this part 51.
  • the sleeve 23 can be screwed onto the end 52, without requiring a relative rotation of the bars 25, 26, by partially unscrewing the sleeve of the bar 25.
  • the sleeves 20, 23 have a generally tubular shape, extend along a longitudinal axis 21, and are traversed by a longitudinal passage provided with a cylindrical thread 22 resulting from an internal thread.
  • the nature of the steel alloy and the diameter of the blanks used to manufacture the sleeves and nuts are chosen according to the mechanical and geometric characteristics of the connecting device to be manufactured.
  • the steel constituting the sleeve may have at least one mechanical characteristic distinct from that of the steel constituting the reinforcing bars; in particular, the ductility of the steel constituting the sleeve can be greater than that of the steel constituting the reinforcing bars.
  • a tubular sleeve blank can be obtained by cutting off a tube or else by forging and drilling, the length of the blank being determined according to the length 24 ( picture 2 ) desired for the sleeve.
  • the length 24 of the sleeve may be close to twice the diameter of the bars to be connected by the sleeve.
  • Each of the sleeves 20, 23 and of the nuts 71 has asperities 27 to 34, 39 to 41, 63 formed on its respective external face.
  • the body of the sleeve 23 is provided with a central rib 39 which extends along a circumference of the body, on either side of a median transverse plane whose trace in the plane of the figure 4 is marked 48.
  • the central rib 39 is uninterrupted, and bordered on either side of indentations 30, 31 which extend along portions of helices having as their axis the longitudinal axis 21 of the sleeve, so that the central rib 39 has a width - measured parallel to the axis 21 - which varies according to the considered point of the circumference of the body.
  • the body of the sleeve 23 is also provided with two uninterrupted end ribs 40, 41 which each extend along a circumference of the body from one of the two longitudinal ends 75, 76 of the body, and also each have a variable width (cf. figures 3 and 4 ).
  • the body of the sleeve 20 is provided, on its substantially cylindrical outer face, with raised bumps - or locks - 27 to 29 which extend along portions of circles located in planes perpendicular to the longitudinal axis 21 of the muff.
  • These locks are separated two by two by recessed asperities which extend along portions of helices having as their axis the longitudinal axis 21 of the sleeve, and whose depth 45 is of the order of one or more millimeters. .
  • the locks have a quadrilateral facet shape - in particular a diamond shape - which is curved along the radius of the cylindrical shell of the body.
  • the nut 71 essentially consists of an annular portion 61 and a flared portion 62 which extends from the annular portion.
  • Portion 61 of the nut has a flat face 81 arranged to bear against a flat end face of a sleeve.
  • the flared portion 62 which extends the annular portion 61 along the longitudinal axis 82 of the nut, is provided with four indentations 63 regularly spaced (by 90 degrees) at its periphery.
  • the portion 62 is delimited by a frustoconical surface 73 - or chamfer - forming an angle 74 with the axis 82 (cf. figure 6 ).
  • the recesses 63 are substantially cylindrical in shape, of identical dimensions, extend substantially parallel to the axis 82 of the nut, and open onto the second end face 85 of the nut which is parallel to the first face 81 end.
  • the indentations 63 facilitate the adhesion of the concrete to the outer face of the nut and can be used to screw or unscrew the nut using a tool comprising several lugs of a shape complementary to that of the indentations 63.
  • the asperities can be formed on the outer surface of a solid blank, by forging in two stages.
  • a pair of dies 65 of substantially identical shape are used.
  • Each die has a cavity delimited by a surface 79 in the general shape of a half-cylinder and in which are cut grooves 67 whose shape corresponds to part of the shape of an asperity in relief to be formed on the sleeve blank.
  • the inner surface 79 of the dies may include ribs whose shape corresponds to part of the shape of a recessed asperity to be formed on the sleeve blank.
  • a second pair of dies 66 similar to the first dies 65 but of substantially different shape are used, which are pressed according to the arrows 54 against the preformed blank in order to obtain the surface of the draft of the asperities having the desired final shape.
  • the blank thus obtained can then be drilled and tapped to obtain the sleeve.
  • Die 69 comprises a central cavity 77 delimited by a surface in the general shape of a half-cylinder with axis 89.
  • the second matrix 68 has a shape substantially of revolution along the axis 89, and comprises a central part 70a in relief, the shape of which corresponds to at least part of the shape of the central cavity to be formed on the blank 57 of the nut. .
  • the die 68 also includes a recessed portion extending around the portion 70a, which includes an inclined surface 70b to form the inclined surface 73 of the nut, and projections 70c on the surface 70b to form the indentations 63 on the surface 73 of the nut.
  • the previously heated blank 57 is placed between the dies 68, 69 or in the cavity 77, and the dies are brought together (arrow 100 figure 13 ).
  • the support of the die 68 on the upper face 58 of the blank 57 makes it possible to simultaneously form the flared portion of the nut and at least part of the central cavity of the nut.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Forging (AREA)

Description

La présente invention est relative à un manchon pour la liaison bout à bout de deux armatures filetées, à un dispositif de liaison comportant un tel manchon et à un ensemble d'armatures , et à un ensemble d'armatures réalisé avec un tel manchon.The present invention relates to a sleeve for the end-to-end connection of two threaded fittings, to a connecting device comprising such a sleeve and to a set of fittings, and to a set of fittings made with such a sleeve.

Le domaine technique de l'invention est celui de la fabrication d'armatures en acier pour béton armé.The technical field of the invention is that of the manufacture of steel reinforcements for reinforced concrete.

ETAT DE LA TECHNIQUESTATE OF THE ART

DE10013581A1 décrit un manchon selon le préambule de la revendication 1. DE10013581A1 describes a sleeve according to the preamble of claim 1.

L'invention s'applique notamment aux dispositifs de liaison bout à bout de deux barres d'armature en acier dont les extrémités sont filetées, qui comportent un manchon taraudé qui est vissé sur les extrémités filetées des barres d'armature à rabouter.The invention applies in particular to end-to-end connection devices for two steel reinforcing bars whose ends are threaded, which comprise a threaded sleeve which is screwed onto the threaded ends of the reinforcing bars to be joined.

L'invention permet d'obtenir un tel manchon dont la surface externe comporte des aspérités renforçant l'adhérence du béton - dans lequel le manchon est destiné à être noyé - sur le manchon.The invention makes it possible to obtain such a sleeve, the outer surface of which has roughness reinforcing the adhesion of the concrete - in which the sleeve is intended to be embedded - on the sleeve.

Il est généralement important d'obtenir une bonne cohésion du béton et des ensembles d'armatures noyés dans le béton, lors de la réalisation d'ouvrages en béton armé tels que des bâtiments ou des ouvrages d'art, afin d'assurer la solidité de ces ouvrages.It is generally important to obtain good cohesion of the concrete and of the sets of reinforcements embedded in the concrete, during the construction of reinforced concrete structures such as buildings or engineering structures, in order to ensure the solidity of these works.

Cette cohésion résulte notamment de l'adhérence du béton sur les armatures. Cette nécessité est renforcée pour les ouvrages devant résister à des sollicitations dynamiques importantes, telles que des chocs ou vibrations, pendant toute la durée de vie de l'ouvrage.This cohesion results in particular from the adhesion of the concrete to the reinforcements. This requirement is reinforced for structures that have to withstand significant dynamic stresses, such as shocks or vibrations, throughout the lifetime of the structure.

Il a été proposé, dans le brevet EP728880 , de fabriquer de tels manchons de raboutage à partir d'armatures dites « à haute adhérence ».It has been proposed in the patent EP728880 , to manufacture such splicing sleeves from so-called “high-adhesion” reinforcements.

De telles barres d'armatures font l'objet de diverses prescriptions et normes telles que les normes NF-A-36-016-1 et EN10080, qui définissent notamment des alliages - ou nuances - d'acier utilisables pour la fabrication de ces armatures, des caractéristiques mécaniques de ces aciers, et des caractéristiques géométriques des armatures.Such reinforcing bars are the subject of various prescriptions and standards such as the NF-A-36-016-1 and EN10080 standards, which define in particular the alloys - or grades - of steel usable for the manufacture of these reinforcements. , the mechanical characteristics of these steels, and the geometric characteristics of the reinforcements.

Les barres - ou armatures - de ce type présentent des aspérités sur leur surface externe, qui peuvent être saillantes et qualifiées de « verrous », ou au contraire en creux et alors qualifiées d'« empreintes ».The bars - or frames - of this type have asperities on their outer surface, which can be protruding and qualified as "locks", or on the contrary hollow and then qualified as "fingerprints".

La fabrication de manchons de raboutage de barres d'armature à partir de ce type d'armature, par tronçonnage et forage d'une barre pleine, comme proposé dans le brevet EP728880 , présente des inconvénients.The manufacture of rebar splicing sleeves from this type of rebar, by cutting and drilling a solid bar, as proposed in the patent EP728880 , has drawbacks.

En effet, l'utilisation de barres conforme à ces normes pour la fabrication de manchons de liaison ne permet pas de choisir la nuance d'acier, le diamètre de barre, et la géométrie des aspérités, qui sont nécessaires pour obtenir des manchons de liaison optimisés en fonction des contraintes propres à chaque utilisation de ces manchons dans un ouvrage à construire.Indeed, the use of bars conforming to these standards for the manufacture of connection sleeves does not make it possible to choose the steel grade, the bar diameter, and the geometry of the asperities, which are necessary to obtain connection sleeves. optimized according to the constraints specific to each use of these sleeves in a work to be built.

Un autre inconvénient résulte du fait que ces armatures ne présentent généralement pas des caractéristiques mécaniques uniformes dans leur section, en raison notamment de leur procédé de fabrication par laminage.Another drawback results from the fact that these reinforcements generally do not have uniform mechanical characteristics in their section, in particular because of their method of manufacture by rolling.

Il peut en résulter que les caractéristiques mécaniques d'un manchon réalisé à partir d'une telle armature ne soient pas adaptées caractéristiques des deux armatures qu'il sert à relier, ce qui ne permet pas d'obtenir une liaison optimisée.This may result in the mechanical characteristics of a sleeve made from such an armature not being adapted to the characteristics of the two armatures that it is used to connect, which does not make it possible to obtain an optimized connection.

Il a également été proposé, dans le brevet US7032286 , de fabriquer de tels manchons par un procédé comportant successivement un traitement thermique d'une ébauche, le forgeage de l'ébauche pour former une première cavité borgne, un second traitement thermique, puis la réalisation d'une seconde cavité borgne par forgeage.It has also been proposed in the patent US7032286 , to manufacture such sleeves by a process comprising successively a heat treatment of a blank, the forging of the blank to form a first blind cavity, a second heat treatment, then the production of a second blind cavity by forging.

Le manchon ainsi obtenu, qui comporte une cloison séparant les deux cavités, est ensuite rétreint sur les extrémités de deux barres d'armature à assembler, ce rétreint provoquant la formation de nervures sur la face externe du manchon.The sleeve thus obtained, which comprises a partition separating the two cavities, is then shrunk on the ends of two reinforcing bars to be assembled, this shrunk causing the formation of ribs on the external face of the sleeve.

Un inconvénient de ce procédé est que la cloison rend difficile l'obtention d'un rétreint uniforme sur la longueur du manchon, et que la rigidité de la liaison formée par rétreint entre le manchon et les barres est difficilement maîtrisable, notamment lorsque le rétreint est réalisé avec un outil portatif. En outre, la suppression de cette cloison nécessiterait une opération supplémentaire.A disadvantage of this method is that the partition makes it difficult to obtain a uniform shrinkage over the length of the sleeve, and that the rigidity of the connection formed by shrinking between the sleeve and the bars is difficult to control, in particular when the shrinking is carried out with a portable tool. Also, deleting this partition would require an additional operation.

Au surplus, le rétreint de la paroi du manchon ne permet pas de maîtriser parfaitement la position et la profondeur des nervures externes destinées à « verrouiller » le manchon au béton qui l'entoure.In addition, the shrinking of the wall of the sleeve does not make it possible to perfectly control the position and the depth of the external ribs intended to “lock” the sleeve to the concrete which surrounds it.

EXPOSÉ DE L'INVENTIONDISCLOSURE OF THE INVENTION

Un objectif de l'invention est de proposer un manchon de liaison bout à bout de deux armatures d'acier, et un dispositif de liaison incorporant un tel manchon, dont la résistance aux efforts de traction et l'adhérence au béton soient améliorées.An object of the invention is to provide a sleeve for end-to-end connection of two steel reinforcements, and a connection device incorporating such a sleeve, whose resistance to tensile forces and adhesion to concrete are improved.

Un objectif de l'invention est de proposer un ensemble d'armatures réalisé avec un tel manchon, qui soit amélioré et/ou qui remédie, en partie au moins, aux lacunes ou inconvénients des systèmes connus de liaison d'armatures.An object of the invention is to propose a set of reinforcements produced with such a sleeve, which is improved and/or which remedies, in part at least, the shortcomings or drawbacks of known systems for connecting reinforcements.

Selon un aspect de l'invention, il est proposé un manchon de liaison permettant d'assurer la liaison bout à bout de deux armatures filetées, qui comporte un corps en acier sensiblement tubulaire qui est fileté intérieurement ; le corps est pourvu d'une nervure centrale ininterrompue qui fait office de verrou et s'étend (continûment) le long d'une circonférence du corps ; la nervure centrale est bordée de part et d'autre d'empreintes (ou rainures), et présente une largeur variable - i.e. non uniforme le long de la circonférence - ; ainsi, la résistance du manchon aux efforts de traction ainsi que l'adhérence au béton du manchon sont améliorées.According to one aspect of the invention, there is proposed a connection sleeve making it possible to ensure the end-to-end connection of two threaded fittings, which comprises a substantially tubular steel body which is internally threaded; the body is provided with an uninterrupted central rib which acts as a lock and extends (continuously) along a circumference of the body; the central rib is lined on either side with indentations (or grooves), and has a variable width - i.e. not uniform along the circumference -; thus, the resistance of the sleeve to tensile forces as well as the adhesion of the sleeve to concrete are improved.

Selon un mode de réalisation, les empreintes bordant la nervure centrale s'étendent le long de portions d'hélices ayant pour axe l'axe longitudinal du manchon.According to one embodiment, the cavities bordering the central rib extend along portions of helices having as their axis the longitudinal axis of the sleeve.

Selon un mode de réalisation, le corps est en outre pourvu de deux nervures d'extrémité ininterrompues qui font également office de verrou et s'étendent chacune (continûment) le long d'une (entière) circonférence du corps, à partir - et au voisinage - d'une des deux extrémités longitudinales du corps, ces deux nervures présentant chacune une largeur variable.According to one embodiment, the body is further provided with two uninterrupted end ribs which also act as a lock and each extend (continuously) along a (entire) circumference of the body, from - and at vicinity - of one of the two longitudinal ends of the body, these two ribs each having a variable width.

Selon un autre aspect de l'invention, il est proposé un dispositif de liaison de deux armatures filetées qui comporte un manchon selon l'invention et un ou deux écrou(s) pourvu(s) d'une portion annulaire - qui est arrangée pour venir en appui contre une face d'extrémité du manchon -, et le cas échéant d'une portion évasée (sensiblement tronconique) qui s'étend à partir de la portion annulaire ; la portion évasée peut être pourvue d'empreintes (ou encoches) à sa périphérie - sur sa face externe -, de sorte que l'adhérence au béton de l'écrou est améliorée.According to another aspect of the invention, there is proposed a device for connecting two threaded fittings which comprises a sleeve according to the invention and one or two nut(s) provided with an annular portion - which is arranged to come to rest against an end face of the sleeve -, and if necessary a flared portion (substantially frustoconical) which extends from the annular portion; the flared portion may be provided with indentations (or notches) at its periphery—on its outer face—so that the adhesion of the nut to the concrete is improved.

Par ailleurs, l'amincissement de la paroi de l'écrou - au droit de la portion évasée - permet d'éviter la formation d'amorces de fissures dans le béton en contact avec l'écrou et l'extrémité du manchon, notamment lorsque l'ouvrage en béton dans lequel est incorporé le manchon et l'écrou est soumis à des sollicitations mécaniques importantes, telles que des chocs ou vibrations.Furthermore, the thinning of the wall of the nut - in line with the flared portion - makes it possible to avoid the formation of incipient cracks in the concrete in contact with the nut and the end of the sleeve, in particular when the concrete structure in which the sleeve and the nut are incorporated is subjected to significant mechanical stresses, such as shocks or vibrations.

Selon un autre mode de réalisation, le dispositif comporte deux écrous en acier qui sont généralement sensiblement identiques, chaque écrou étant pourvu d'une nervure annulaire et d'une portion évasée qui s'étend à partir de la nervure annulaire, la portion évasée étant pourvue d'empreintes à sa périphérie, de sorte que l'adhérence au béton des pièces du dispositif est améliorée.According to another embodiment, the device comprises two steel nuts which are generally substantially identical, each nut being provided with an annular rib and a flared portion which extends from the annular rib, the flared portion being provided with indentations on its periphery, so that the adhesion to the concrete of the parts of the device is improved.

Le manchon de liaison - et/ou les écrous - peut (peuvent) être fabriqué(s) par usinage d'un tube - ou ébauche tubulaire - en acier, dont le diamètre et la nuance d'acier sont adaptés aux caractéristiques du manchon (et/ou des écrous) à fabriquer, ce qui permet d'optimiser les caractéristiques géométriques et mécaniques du manchon et/ou des écrous, et de réduire les pertes d'énergie et de matière.The connecting sleeve - and/or the nuts - can be manufactured by machining a tube - or tubular blank - in steel, the diameter and steel grade of which are adapted to the characteristics of the sleeve ( and/or nuts) to be manufactured, which makes it possible to optimize the geometric and mechanical characteristics of the sleeve and/or of the nuts, and to reduce energy and material losses.

Le manchon de liaison - et/ou les écrous - peut (peuvent) également être fabriqué(s) par forgeage d'une ébauche ou lopin.The connecting sleeve - and/or the nuts - can also be manufactured by forging a blank or blank.

Selon un mode de réalisation, la fabrication du manchon - et le cas échéant de l'écrou - de raboutage d'armatures en acier pour un ouvrage en béton armé, comporte les opérations suivantes :

  • former des aspérités sur la surface externe d'une ébauche en acier, qui est généralement pleine, par forgeage,
  • former une cavité cylindrique traversant l'ébauche forgée, et
  • tarauder la cavité cylindrique.
According to one embodiment, the manufacture of the sleeve - and where appropriate of the nut - for butt-jointing steel reinforcements for a reinforced concrete structure, comprises the following operations:
  • forming asperities on the external surface of a steel blank, which is generally solid, by forging,
  • forming a cylindrical cavity passing through the forged blank, and
  • tap the cylindrical cavity.

Ceci permet d'obtenir un manchon fileté intérieurement - respectivement un écrou - dont la résistance aux efforts mécaniques et l'adhérence au béton sont améliorées.This makes it possible to obtain an internally threaded sleeve - respectively a nut - whose resistance to mechanical stress and adhesion to concrete are improved.

En particulier, les coupleurs/manchons forgés présentent une résistance accrue à la fatigue et à la rupture, avec un fibrage de l'acier conservé lors du processus de mise en forme.In particular, forged couplers/sleeves exhibit increased resistance to fatigue and fracture, with a steel fiber structure retained during the forming process.

Le forgeage peut également permettre d'éliminer certains points de fragilité comme des fissures ou criques présentes dans l'acier utilisé pour la fabrication des coupleurs.Forging can also make it possible to eliminate certain weak points such as cracks or cracks present in the steel used for the manufacture of the couplers.

Selon d'autres modes de réalisation:

  • la formation de la cavité cylindrique dans l'ébauche d'un manchon peut être obtenue par un forage longitudinal de l'ébauche forgée;
  • la formation de la cavité cylindrique dans l'ébauche d'un écrou peut être obtenue, en partie au moins, par forgeage, simultanément ou consécutivement à la formation - par forgeage - d'une portion évasée de l'écrou et/ou d'empreintes en creux sur cette portion évasée;
  • l'ébauche peut être chauffée jusqu'à atteindre une température qui est au moins égale à 400 °C environ, en particulier une température située dans une plage allant de 400 °C environ à 1000 °C environ;
  • alternativement, l'opération de forgeage peut être réalisée à froid ;
  • l'opération de forgeage d'un manchon et/ou d'un écrou peut être réalisée en plusieurs étapes, en utilisant un jeu de matrices spécifique à chaque étape, i.e. en utilisant plusieurs jeux distincts de matrices ;
  • on peut marquer la surface externe du manchon/écrou, par enlèvement de matière ou par forgeage, de façon à former - en creux ou en relief - des signes permettant d'identifier des caractéristiques du manchon/écrou telles que des caractéristiques de l'acier le constituant, et/ou des caractéristiques d'identification du fabricant du manchon/écrou ; cette opération de marquage peut être réalisée sensiblement simultanément aux opérations de forgeage et de formation des aspérités ;
  • le marquage de la surface externe du manchon ou de l'écrou peut également comporter une opération de dépôt de matière sur cette surface ;
  • on peut fabriquer les manchons à partir d'un acier présentant une limite d'élasticité située dans une plage allant de 200 méga Pascal (200 MPa) environ à 1000 MPa environ, en particulier un acier présentant une limite d'élasticité située dans une plage allant de 400 MPa environ à 600 MPa environ ;
  • on peut fabriquer les manchons à partir d'un acier présentant un allongement sous charge maximale situé dans une plage allant de 1% environ à 10% environ, en particulier un acier présentant un allongement sous charge maximale situé dans une plage allant de 3% environ à 7% environ.
According to other embodiments:
  • the formation of the cylindrical cavity in the blank of a sleeve can be obtained by longitudinal drilling of the forged blank;
  • the formation of the cylindrical cavity in the blank of a nut can be obtained, in part at least, by forging, simultaneously or following the formation - by forging - of a flared portion of the nut and/or indentations on this flared portion;
  • the blank can be heated until it reaches a temperature which is at least equal to approximately 400°C, in particular a temperature situated in a range extending from approximately 400°C to approximately 1000°C;
  • alternatively, the forging operation can be carried out cold;
  • the operation of forging a sleeve and/or a nut can be carried out in several stages, using a set of dies specific to each stage, ie using several distinct sets of dies;
  • the external surface of the sleeve/nut can be marked, by removal of material or by forging, so as to form - in hollow or in relief - signs making it possible to identify characteristics of the sleeve/nut such as characteristics of steel the constituent, and/or identification characteristics of the sleeve/nut manufacturer; this marking operation can be carried out substantially simultaneously with the operations of forging and formation of asperities;
  • the marking of the external surface of the sleeve or of the nut can also comprise an operation of depositing material on this surface;
  • the sleeves can be manufactured from a steel having a yield limit situated in a range extending from approximately 200 mega Pascal (200 MPa) to approximately 1000 MPa, in particular a steel having a yield limit situated in a range ranging from approximately 400 MPa to approximately 600 MPa;
  • the sleeves can be made from a steel having an elongation under maximum load in a range from about 1% to about 10%, in particular a steel having an elongation under maximum load in a range from about 3% at around 7%.

Ce procédé permet de réaliser simplement et avec une bonne répétitivité des manchons et des écrous dont les caractéristiques mécaniques et géométriques, en particulier la géométrie des aspérités en creux et en relief, sont optimisées par rapport aux contraintes d'utilisation des dispositifs de liaison d'armatures dont ils font partie.This process makes it possible to produce simply and with good repeatability sleeves and nuts whose characteristics mechanical and geometric, in particular the geometry of the recessed and raised asperities, are optimized with respect to the constraints of use of the reinforcement connecting devices of which they form part.

On peut former, à la surface d'un manchon, un réseau d'aspérités de forme allongée et effilée à leurs deux extrémités, de dimensions identiques, qui sont régulièrement disposées/espacées sur la surface externe (sensiblement cylindrique) du manchon.It is possible to form, on the surface of a sleeve, a network of asperities of elongated and tapered shape at their two ends, of identical dimensions, which are regularly arranged/spaced out on the outer surface (substantially cylindrical) of the sleeve.

Les aspérités peuvent s'étendre le long de portions de cercles situés dans des plans perpendiculaires à l'axe longitudinal du manchon.The asperities can extend along portions of circles located in planes perpendicular to the longitudinal axis of the sleeve.

Les aspérités peuvent également s'étendre le long de portions d'hélices ayant pour axe l'axe longitudinal du manchon.The asperities can also extend along portions of helices having as their axis the longitudinal axis of the sleeve.

Les aspérités peuvent présenter une surface lisse s'étendant selon une calotte cylindrique ; cette calotte peut être délimitée par un contour en forme de losange, ou bien peut être délimitée par un contour curviligne, en partie au moins.The asperities may have a smooth surface extending along a cylindrical cap; this cap may be delimited by a diamond-shaped outline, or else may be delimited by a curvilinear outline, at least in part.

La plus grande dimension de ces aspérités est de préférence supérieure à un millimètre, par exemple de l'ordre d'un ou plusieurs centimètres, tandis que la profondeur (d'aspérités en creux) ou épaisseur (d'aspérités en relief) est de l'ordre d'un ou plusieurs millimètres.The largest dimension of these asperities is preferably greater than one millimeter, for example of the order of one or more centimeters, while the depth (of recessed asperities) or thickness (of raised asperities) is the order of one or more millimeters.

On peut en outre former des (micro)aspérités de taille voisine de un millimètre, ou inférieure à cette valeur , par enlèvement de matière également, par déformation de la surface externe de l'ébauche, ou bien par dépôt de matière sur la surface externe du manchon et/ou de l'écrou.It is also possible to form (micro) asperities of a size close to one millimeter, or less than this value, also by removal of material, by deformation of the external surface of the blank, or else by deposit of material on the external surface. sleeve and/or nut.

Selon les caractéristiques recherchées pour le manchon et/ou l'écrou, les ébauches de ces pièces pourront être soumises en outre à des opérations de recuit, d'ébavurage, et/ou de grenaillage.Depending on the characteristics sought for the sleeve and/or the nut, the blanks for these parts may also be subjected to annealing, deburring and/or shot-blasting operations.

Selon un autre aspect de l'invention, il est proposé un ensemble - tel qu'une cage - d'armatures pour béton, qui comporte deux barres d'armature en acier dont les extrémités filetées sont vissées dans un manchon selon l'invention, le manchon comportant des aspérités forgées sur sa face externe, deux écrous en acier forgés et pourvu d'empreintes pouvant être respectivement vissés sur les extrémités des deux barres, en appui respectif contre les deux faces d'extrémité longitudinale du manchon.According to another aspect of the invention, there is proposed a set - such as a cage - of reinforcements for concrete, which comprises two steel reinforcing bars whose threaded ends are screwed into a sleeve according to the invention, the sleeve having forged asperities on its face external, two forged steel nuts provided with indentations which can be respectively screwed onto the ends of the two bars, resting respectively against the two longitudinal end faces of the sleeve.

Selon un mode de réalisation, le filetage des extrémités des barres peut présenter un profil arrondi et être obtenu par roulage.According to one embodiment, the threading of the ends of the bars can have a rounded profile and be obtained by rolling.

D'autres aspects, caractéristiques, et avantages de l'invention apparaissent dans la description suivante qui se réfère aux figures annexées et illustre, sans aucun caractère limitatif, des modes préférés de réalisation de l'invention.Other aspects, characteristics and advantages of the invention appear in the following description which refers to the appended figures and illustrates, without any limiting character, preferred embodiments of the invention.

BREVE DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF FIGURES

  • La figure 1 illustre en perspective un manchon selon un mode de réalisation qui ne fait pas partie de l'invention.The figure 1 illustrates in perspective a sleeve according to an embodiment which does not form part of the invention.
  • La figure 2 illustre le manchon de la figure 1 en vue en coupe longitudinale.The figure 2 illustrates the sleeve of the figure 1 in longitudinal section view.
  • La figure 3 illustre en perspective un manchon selon un mode de réalisation de l'invention.The picture 3 illustrates in perspective a sleeve according to one embodiment of the invention.
  • La figure 4 illustre le manchon de la figure 3 en vue en coupe longitudinale.The figure 4 illustrates the sleeve of the picture 3 in longitudinal section view.
  • La figure 5 illustre en perspective un écrou susceptible de coopérer avec un manchon tel que ceux illustrés figures 1 à 4, pour former un dispositif de liaison tel que ceux illustrés figures 7 à 10, selon un mode de réalisation de l'invention.The figure 5 illustrates in perspective a nut capable of cooperating with a sleeve such as those illustrated figures 1 to 4 , to form a connecting device such as those illustrated figures 7 to 10 , according to one embodiment of the invention.
  • La figure 6 illustre l'écrou de la figure 5 en vue en coupe longitudinale.The figure 6 illustrates the nut of the figure 5 in longitudinal section view.
  • Les figures 7 et 8 illustrent une portion d'un ensemble d'armatures selon un mode de réalisation de l'invention, dans deux configurations : dans la configuration correspondant à la figure 7, deux écrous de blocage ont été vissés sur les extrémités filetées respectives de deux armatures, et un manchon a été vissé sur l'extrémité filetée d'une première des deux armatures ; dans la configuration correspondant à la figure 8, le manchon a été en outre vissé sur l'extrémité filetée de la seconde armature.The figures 7 and 8 illustrate a portion of a set of fittings according to one embodiment of the invention, in two configurations: in the configuration corresponding to the figure 7 , two locking nuts were screwed onto the respective threaded ends of two armatures, and a sleeve was screwed onto the threaded end of a first of the two armatures; in the configuration corresponding to the figure 8 , the sleeve was further screwed onto the threaded end of the second armature.
  • Les figures 9 et 10 illustrent une portion d'un ensemble d'armatures selon un autre mode de réalisation de l'invention, dans deux configurations respectivement similaires à celles des figures 7 et 8.The figures 9 and 10 illustrate a portion of a set of fittings according to another embodiment of the invention, in two configurations respectively similar to those of figures 7 and 8 .
  • Les figures 11 et 12 illustrent schématiquement deux étapes d'un procédé de fabrication d'un manchon par forgeage, selon un mode de réalisation.The figures 11 and 12 schematically illustrate two steps of a method of manufacturing a sleeve by forging, according to one embodiment.
  • Les figures 13 et 14 illustrent schématiquement deux étapes d'un procédé de fabrication d'un écrou par forgeage, selon un mode de réalisation.The figures 13 and 14 schematically illustrate two steps of a method of manufacturing a nut by forging, according to one embodiment.
DESCRIPTION DETAILLEE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

Sauf indication explicite ou implicite contraire, des éléments ou organes - structurellement ou fonctionnellement - identiques ou similaires, sont désignés par des repères identiques sur les différentes figures.Unless explicitly or implicitly indicated to the contrary, elements or components - structurally or functionally - identical or similar, are designated by identical references in the various figures.

La réalisation d'une structure - telle qu'une cage - d'armature pour un ouvrage en béton armé peut nécessiter la liaison bout à bout de deux barres d'armature en acier.The realization of a structure - such as a cage - reinforcement for a reinforced concrete work may require the butt connection of two steel reinforcing bars.

A cet effet, les extrémités filetées 51, 52 respectives de deux barres 25, 26, qui sont placées en regard mutuel, peuvent étre liées uniquement par un manchon taraudé, ou bien par un dispositif 50 de liaison incorporant, outre un manchon 20, 23 taraudé, un ou deux écrous 71 comme illustré figures 7 à 10.For this purpose, the respective threaded ends 51, 52 of two bars 25, 26, which are placed facing each other, can be linked only by a threaded sleeve, or else by a connecting device 50 incorporating, in addition to a sleeve 20, 23 tapped, one or two nuts 71 as shown figures 7 to 10 .

Dans les configurations illustrées figures 7 et 8 la longueur de chaque partie filetée 51, 52 des barres 25, 26 est au moins égale à la somme de l'épaisseur d'un écrou 71 et de la demi longueur du manchon fileté 20, ces dimensions étant mesurées selon l'axe 49 longitudinal commun aux barres, écrous, et manchon.In the configurations shown figures 7 and 8 the length of each threaded part 51, 52 of the bars 25, 26 is at least equal to the sum of the thickness of a nut 71 and the half length of the threaded sleeve 20, these dimensions being measured along the longitudinal axis 49 common to bars, nuts, and sleeve.

La liaison mutuelle des barres 25, 26 est obtenue en vissant un écrou 71 puis un manchon 20 sur l'extrémité de la barre 25, en vissant un écrou 71 sur l'extrémité de la seconde barre 26 (cf. figure 7), puis en vissant la barre 26 dans la portion de la partie filetée du manchon 20 qui est restée libre, pour aboutir à la configuration de la figure 8.The mutual connection of the bars 25, 26 is obtained by screwing a nut 71 then a sleeve 20 on the end of the bar 25, by screwing a nut 71 on the end of the second bar 26 (cf. figure 7 ), then by screwing the bar 26 into the portion of the threaded part of the sleeve 20 which has remained free, to arrive at the configuration of the figure 8 .

Une liaison mutuelle rigide des barres, des écrous, et du manchon 20 est obtenue en serrant respectivement les deux écrous 71 contre les deux extrémités longitudinales du manchon 20.A rigid mutual connection of the bars, the nuts, and the sleeve 20 is obtained by tightening the two nuts 71 respectively against the two longitudinal ends of the sleeve 20.

Par comparaison avec les figures 7 et 8, la partie 51 filetée de la barre 25 illustrée figures 9 et 10 est plus longue de sorte que, comme illustré figure 9, un écrou 71 et la quasi-totalité du manchon 23 peuvent être engagés (vissés) sur cette partie 51.By comparison with the figures 7 and 8 , the threaded part 51 of the bar 25 illustrated figures 9 and 10 is longer so that, as shown figure 9 , a nut 71 and almost all of the sleeve 23 can be engaged (screwed) on this part 51.

Après qu'un écrou 71 ait été vissé sur l'extrémité 52 de la barre 26, les extrémités 51 et 52 étant placées en alignement mutuel - et sensiblement en contact mutuel, le manchon 23 peut être vissé sur l'extrémité 52, sans nécessiter une rotation relative des barres 25, 26, en dévissant partiellement le manchon de la barre 25.After a nut 71 has been screwed onto the end 52 of the bar 26, the ends 51 and 52 being placed in mutual alignment - and substantially in mutual contact, the sleeve 23 can be screwed onto the end 52, without requiring a relative rotation of the bars 25, 26, by partially unscrewing the sleeve of the bar 25.

On aboutit ensuite à la configuration illustrée figure 10 en serrant les deux écrous 71 contre le manchon 23.We then arrive at the configuration illustrated figure 10 by tightening the two nuts 71 against the sleeve 23.

Par référence aux figures 1 à 4 notamment, les manchons 20, 23 présentent une forme générale tubulaire, s'étendent selon un axe longitudinal 21, et sont traversés par un passage longitudinal pourvu d'un filetage cylindrique 22 résultant d'un taraudage.By reference to figures 1 to 4 in particular, the sleeves 20, 23 have a generally tubular shape, extend along a longitudinal axis 21, and are traversed by a longitudinal passage provided with a cylindrical thread 22 resulting from an internal thread.

La nature de l'alliage d'acier et le diamètre des ébauches utilisées pour fabriquer les manchons et écrous sont choisis en fonction des caractéristiques mécaniques et géométriques du dispositif de liaison à fabriquer. L'acier constituant le manchon peut présenter au moins une caractéristique mécanique distincte de celle de l'acier constituant les barres d'armature; en particulier, la ductilité de l'acier constituant le manchon peut être supérieure à celle de l'acier constituant les barres d'armatures.The nature of the steel alloy and the diameter of the blanks used to manufacture the sleeves and nuts are chosen according to the mechanical and geometric characteristics of the connecting device to be manufactured. The steel constituting the sleeve may have at least one mechanical characteristic distinct from that of the steel constituting the reinforcing bars; in particular, the ductility of the steel constituting the sleeve can be greater than that of the steel constituting the reinforcing bars.

Une ébauche tubulaire de manchon peut être obtenue par tronçonnage d'un tube ou bien par forgeage et forage, la longueur de l'ébauche étant déterminée en fonction de la longueur 24 (figure 2) souhaitée pour le manchon.A tubular sleeve blank can be obtained by cutting off a tube or else by forging and drilling, the length of the blank being determined according to the length 24 ( picture 2 ) desired for the sleeve.

La longueur 24 du manchon peut être voisine du double du diamètre des barres à relier par le manchon.The length 24 of the sleeve may be close to twice the diameter of the bars to be connected by the sleeve.

Chacun des manchons 20, 23 et des écrous 71 comporte des aspérités 27 à 34, 39 à 41, 63 formées sur sa face externe respective.Each of the sleeves 20, 23 and of the nuts 71 has asperities 27 to 34, 39 to 41, 63 formed on its respective external face.

Dans le mode de réalisation illustré figures 3, 4, 9, et 10, le corps du manchon 23 est pourvu d'une nervure centrale 39 qui s'étend le long d'une circonférence du corps, de part et d'autre d'un plan transversal médian dont la trace dans le plan de la figure 4 est repérée 48.In the illustrated embodiment figures 3, 4 , 9, and 10 , the body of the sleeve 23 is provided with a central rib 39 which extends along a circumference of the body, on either side of a median transverse plane whose trace in the plane of the figure 4 is marked 48.

La nervure centrale 39 est ininterrompue, et bordée de part et d'autre d'empreintes 30, 31 qui s'étendent le long de portions d'hélices ayant pour axe l'axe longitudinal 21 du manchon, de sorte que la nervure centrale 39 présente une largeur - mesurée parallèlement à l'axe 21 - qui varie selon le point considéré de la circonférence du corps.The central rib 39 is uninterrupted, and bordered on either side of indentations 30, 31 which extend along portions of helices having as their axis the longitudinal axis 21 of the sleeve, so that the central rib 39 has a width - measured parallel to the axis 21 - which varies according to the considered point of the circumference of the body.

Le corps du manchon 23 est également pourvu de deux nervures 40, 41 ininterrompues d'extrémité qui s'étendent chacune le long d'une circonférence du corps à partir d'une des deux extrémités 75, 76 longitudinales du corps, et présentent également chacune une largeur variable (cf. figures 3 et 4).The body of the sleeve 23 is also provided with two uninterrupted end ribs 40, 41 which each extend along a circumference of the body from one of the two longitudinal ends 75, 76 of the body, and also each have a variable width (cf. figures 3 and 4 ).

Dans le mode de réalisation illustré figures 1, 2, 7, et 8, le corps du manchon 20 est muni, sur sa face externe sensiblement cylindrique, d'aspérités en relief - ou verrous - 27 à 29 qui s'étendent le long de portions de cercles situés dans des plans perpendiculaires à l'axe longitudinal 21 du manchon.In the illustrated embodiment figures 1, 2 , 7, and 8 , the body of the sleeve 20 is provided, on its substantially cylindrical outer face, with raised bumps - or locks - 27 to 29 which extend along portions of circles located in planes perpendicular to the longitudinal axis 21 of the muff.

Ces verrous sont séparés deux à deux par des aspérités en creux qui s'étendent le long de portions d'hélices ayant pour axe l'axe longitudinal 21 du manchon, et dont la profondeur 45 est de l'ordre d'un ou plusieurs millimètres.These locks are separated two by two by recessed asperities which extend along portions of helices having as their axis the longitudinal axis 21 of the sleeve, and whose depth 45 is of the order of one or more millimeters. .

Il en résulte que les verrous présentent une forme de facette quadrilatère - en particulier en forme de losange - qui est incurvée selon le rayon de l'enveloppe cylindrique du corps.As a result, the locks have a quadrilateral facet shape - in particular a diamond shape - which is curved along the radius of the cylindrical shell of the body.

Par référence aux figures 5 et 6 notamment, l'écrou 71 est essentiellement constitué d'une portion 61 annulaire et d'une portion 62 évasée qui s'étend à partir de la portion annulaire.By reference to figures 5 and 6 in particular, the nut 71 essentially consists of an annular portion 61 and a flared portion 62 which extends from the annular portion.

La portion 61 de l'écrou présente une face plane 81 arrangée pour venir en appui contre une face plane d'extrémité d'un manchon.Portion 61 of the nut has a flat face 81 arranged to bear against a flat end face of a sleeve.

La portion 62 évasée, qui prolonge la portion annulaire 61 le long de l'axe longitudinal 82 de l'écrou, est pourvue de quatre empreintes 63 régulièrement espacées (de 90 degrés) à sa périphérie. La portion 62 est délimitée par une surface 73 tronconique - ou chanfrein - formant un angle 74 avec l'axe 82 (cf. figure 6).The flared portion 62, which extends the annular portion 61 along the longitudinal axis 82 of the nut, is provided with four indentations 63 regularly spaced (by 90 degrees) at its periphery. The portion 62 is delimited by a frustoconical surface 73 - or chamfer - forming an angle 74 with the axis 82 (cf. figure 6 ).

Les empreintes 63 sont de forme sensiblement cylindrique, de dimensions identiques, s'étendent sensiblement parallèlement à l'axe 82 de l'écrou, et débouchent sur la seconde face 85 d'extrémité de l'écrou qui est parallèle à la première face 81 d'extrémité.The recesses 63 are substantially cylindrical in shape, of identical dimensions, extend substantially parallel to the axis 82 of the nut, and open onto the second end face 85 of the nut which is parallel to the first face 81 end.

Les empreintes 63 facilitent l'adhésion du béton sur la face externe de l'écrou et peuvent être utilisées pour visser ou dévisser l'écrou à l'aide d'un outil comportant plusieurs ergots de forme complémentaire à celle des empreintes 63.The indentations 63 facilitate the adhesion of the concrete to the outer face of the nut and can be used to screw or unscrew the nut using a tool comprising several lugs of a shape complementary to that of the indentations 63.

Pour la fabrication d'un manchon, on peut former les aspérités sur la surface externe d'une ébauche pleine, par forgeage en deux étapes.For the manufacture of a sleeve, the asperities can be formed on the outer surface of a solid blank, by forging in two stages.

Par référence à la figure 11, on utilise une paire de matrices 65 de forme sensiblement identique. Chaque matrice comporte une cavité délimitée par une surface 79 en forme générale de demi cylindre et dans laquelle sont creusées des rainures 67 dont la forme correspond à une partie de la forme d'une aspérité en relief à former sur l'ébauche de manchon.By reference to the figure 11 , a pair of dies 65 of substantially identical shape are used. Each die has a cavity delimited by a surface 79 in the general shape of a half-cylinder and in which are cut grooves 67 whose shape corresponds to part of the shape of an asperity in relief to be formed on the sleeve blank.

Alternativement, la surface interne 79 des matrices peut comporter des nervures dont la forme correspond à une partie de la forme d'une aspérité en creux à former sur l'ébauche de manchon.Alternatively, the inner surface 79 of the dies may include ribs whose shape corresponds to part of the shape of a recessed asperity to be formed on the sleeve blank.

Les surfaces 79 des matrices 65 s'étendant parallèlement à l'axe longitudinal 59 de l'ébauche 55 préalablement chauffée, les matrices sont placées au contact de l'ébauche 55 par un mouvement selon les flèches 53, et sont mises en appui sur la surface externe 56 de l'ébauche afin que les aspérités 67 des matrices provoquent la formation d'aspérités sur l'ébauche 55, telles que celles repérées 28 figure 12.The surfaces 79 of the dies 65 extending parallel to the longitudinal axis 59 of the blank 55 previously heated, the dies are placed in contact with the blank 55 by a movement according to the arrows 53, and are brought to rest on the outer surface 56 of the blank so that the asperities 67 of the dies cause the formation of asperities on the blank 55, such as those marked 28 figure 12 .

Par référence à la figure 12, dans une seconde étape de forgeage, on utilise une seconde paire de matrices 66 similaires aux premières matrices 65 mais de forme sensiblement différente, que l'on presse selon les flèches 54 contre l'ébauche pré formée afin d'obtenir à la surface de l'ébauche des aspérités ayant la forme finale souhaitée.By reference to the figure 12 , in a second forging step, a second pair of dies 66 similar to the first dies 65 but of substantially different shape are used, which are pressed according to the arrows 54 against the preformed blank in order to obtain the surface of the draft of the asperities having the desired final shape.

On peut ensuite forer et tarauder l'ébauche ainsi obtenue pour obtenir le manchon.The blank thus obtained can then be drilled and tapped to obtain the sleeve.

Pour la fabrication d'un écrou, on peut former les aspérités sur la surface externe d'une ébauche pleine, ainsi qu'une partie au moins de la cavité centrale de l'écrou, par forgeage en une seule étape.For the manufacture of a nut, it is possible to form the asperities on the outer surface of a solid blank, as well as at least part of the central cavity of the nut, by forging in a single step.

Par référence aux figures 13 et 14, on utilise une paire de matrices 68, 69. La matrice 69 comporte une cavité centrale 77 délimitée par une surface en forme générale de demi cylindre d'axe 89.By reference to figures 13 and 14 , a pair of dies 68, 69 are used. Die 69 comprises a central cavity 77 delimited by a surface in the general shape of a half-cylinder with axis 89.

La seconde matrice 68 présente une forme sensiblement de révolution selon l'axe 89, et comporte une partie centrale 70a en relief dont la forme correspond à une partie au moins de la forme de la cavité centrale à former sur l'ébauche 57 d'écrou.The second matrix 68 has a shape substantially of revolution along the axis 89, and comprises a central part 70a in relief, the shape of which corresponds to at least part of the shape of the central cavity to be formed on the blank 57 of the nut. .

La matrice 68 comporte également une partie en creux s'étendant autour de la partie 70a, qui comporte une surface 70b inclinée pour former la surface 73 inclinée de l'écrou, et des saillies 70c sur la surface 70b pour former les empreintes 63 sur la surface 73 de l'écrou.The die 68 also includes a recessed portion extending around the portion 70a, which includes an inclined surface 70b to form the inclined surface 73 of the nut, and projections 70c on the surface 70b to form the indentations 63 on the surface 73 of the nut.

L'ébauche 57 préalablement chauffée est placée entre les matrices 68, 69 ou dans la cavité 77, et les matrices sont rapprochées (flèche 100 figure 13). L'appui de la matrice 68 sur la face supérieure 58 de l'ébauche 57 permet de former simultanément la portion évasée de l'écrou et une partie au moins de la cavité centrale de l'écrou.The previously heated blank 57 is placed between the dies 68, 69 or in the cavity 77, and the dies are brought together (arrow 100 figure 13 ). The support of the die 68 on the upper face 58 of the blank 57 makes it possible to simultaneously form the flared portion of the nut and at least part of the central cavity of the nut.

Claims (10)

  1. Sleeve (23) for an end-to-end connection of two threaded bars (25, 26), comprising a substantially tubular steel body which is internally threaded, characterized in that the body is provided with a central rib (39) which extends along a circumference of the body, in that the central rib is uninterrupted, bordered on either side by depressions (30, 31), and has a variable width along the circumference, and in that the sleeve is traversed by a threaded longitudinal passage (22).
  2. The sleeve according to claim 1, wherein the depressions bordering the central rib extend along helical portions having for axis the longitudinal axis of the sleeve.
  3. The sleeve according to claim 1 or 2 wherein the body is provided with two uninterrupted end ribs (40, 41) each extending along a circumference of the body at one of the two longitudinal ends (75, 76) of the body, and each having a variable width.
  4. Connecting device (50) for an end-to-end connection of two threaded bars (25, 26), comprising a sleeve (20, 23) according to any one of claims 1 to 3, the connecting device further comprising one or two nuts (71) which is (are) provided with an annular portion (61) configured to bear against an end face (75, 76) of the sleeve.
  5. The device, according to claim 4, wherein the nut(s) (71) is (are) provided with a flared portion (62) extending from the annular portion (61).
  6. The device according to claim 5, wherein the flared portion (62) is substantially frustoconical.
  7. The device according to Claim 5 or 6, wherein the flared portion (62) is provided with indentations (63) at its periphery.
  8. A concrete reinforcing assembly comprising two steel reinforcing bars (25, 26) whose threaded ends (51, 52) are screwed into a steel sleeve (20, 23) according to any one of claims 1 to 3, the sleeve having asperities (27 to 34, 39 to 41) forged on its external face (60).
  9. The assembly according to claim 8, wherein the steel forming the sleeve has at least one mechanical characteristic distinct from that of the steel forming the reinforcing bars.
  10. The assembly according to claim 8 or 9, comprising two nuts (71) respectively screwed onto the threaded ends of the two bars and resting on the two longitudinal ends (75, 76) of the sleeve.
EP18000683.5A 2009-11-26 2010-11-15 Framework linking device Active EP3495068B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0905677A FR2952840B1 (en) 2009-11-26 2009-11-26 ARMATURE BONDING DEVICE AND METHOD FOR MANUFACTURING THE SAME
PCT/FR2010/000759 WO2011064466A1 (en) 2009-11-26 2010-11-15 Reinforcement-linking device and manufacturing method thereof
EP10790458.3A EP2504117B1 (en) 2009-11-26 2010-11-15 Manufacturing method of a reinforcement-linking device

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
PCT/FR2010/000759 Previously-Filed-Application WO2011064466A1 (en) 2009-11-26 2010-11-15 Reinforcement-linking device and manufacturing method thereof
EP10790458.3A Division EP2504117B1 (en) 2009-11-26 2010-11-15 Manufacturing method of a reinforcement-linking device

Publications (2)

Publication Number Publication Date
EP3495068A1 EP3495068A1 (en) 2019-06-12
EP3495068B1 true EP3495068B1 (en) 2022-07-20

Family

ID=42260392

Family Applications (2)

Application Number Title Priority Date Filing Date
EP18000683.5A Active EP3495068B1 (en) 2009-11-26 2010-11-15 Framework linking device
EP10790458.3A Active EP2504117B1 (en) 2009-11-26 2010-11-15 Manufacturing method of a reinforcement-linking device

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10790458.3A Active EP2504117B1 (en) 2009-11-26 2010-11-15 Manufacturing method of a reinforcement-linking device

Country Status (4)

Country Link
EP (2) EP3495068B1 (en)
DK (2) DK2504117T3 (en)
FR (1) FR2952840B1 (en)
WO (1) WO2011064466A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110409715B (en) * 2019-07-12 2021-08-20 临沂钢铁投资集团不锈钢有限公司 Deformed steel bar semi-grouting sleeve joint
FR3101661B1 (en) 2019-10-08 2022-11-18 Vinci Construction Grands Projets Reinforced concrete tunnel segment
CN115198971A (en) * 2022-07-07 2022-10-18 上海宇辉住宅工业有限公司 Pre-grouting type full-grouting sleeve structure and construction method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5664902A (en) * 1995-01-26 1997-09-09 Barsplice Products, Inc. Tubular coupler for concrete reinforcing bars
FR2731028B1 (en) * 1995-02-23 1997-04-18 Mure Ets DEVICE FOR CONNECTING HIGH-ADHERENCE REINFORCEMENT BARS FOR REINFORCED CONCRETE, AND METHOD FOR OBTAINING IT
KR100248963B1 (en) * 1998-03-31 2000-03-15 정경옥 Thread formation on rods and the method of preparation of them
DE10013581B4 (en) * 2000-03-18 2017-11-09 Friedr. Ischebeck Gmbh Use of a steel part to be used in the construction sector
WO2004098807A1 (en) * 2000-11-21 2004-11-18 Barsplice Products, Inc. Method of making steel couplers for joining concrete reinforcing bars
US6880224B2 (en) * 2003-06-25 2005-04-19 Erico International Corporation Deformed reinforcing bar splice and method

Also Published As

Publication number Publication date
DK2504117T3 (en) 2018-11-12
DK3495068T3 (en) 2022-10-24
FR2952840A1 (en) 2011-05-27
EP2504117A1 (en) 2012-10-03
WO2011064466A1 (en) 2011-06-03
EP3495068A1 (en) 2019-06-12
FR2952840B1 (en) 2013-08-02
EP2504117B1 (en) 2018-08-22

Similar Documents

Publication Publication Date Title
BE1005356A3 (en) Control system lobe elliptique.
EP2350473B1 (en) Polygonal drive means with incorporated flange
EP0327770B1 (en) Method of making mechanical bar joints, bar joint making possible the method, and mechanical bar joint made by same
EP2960531B1 (en) Crimping piece on a support, device comprising such a piece and methods of manufacturing such a part and such a device
EP0381556B1 (en) Tubular pin with internal bulges, and process for making the same
WO2010149768A2 (en) Method for manufacturing composite connecting rods, and connecting rods produced according to the method
EP1162376B1 (en) Fixing member with a recess at the end of its threaded shank
EP3495068B1 (en) Framework linking device
EP3482088A1 (en) Blind fitting rivet having a shoulder sleeve, and associated installation method
FR2954425A1 (en) Composite-metal male fastener for use with aircraft construction, has core element filling central bore to extend length of hollow shell that is made of metal and titanium alloy, where shell includes proximal and distal extremities
EP0563490B1 (en) Method of making mechanical barjoints, joint obtained by this method, bar making possible this method and installation for the preparation of the bars
EP2833006B1 (en) Screw with limited torque
EP0728880B1 (en) Connecting and anchoring device for reinforcing rods with high adherence for reinforced concrete and method of its realization
EP3004483B1 (en) Reinforcing rod with high adherence for reinforced concrete
EP3938125B1 (en) Method for preparing a reinforcing rod for reinforced concrete
FR3072106A1 (en) DEVICE FOR CONNECTING REINFORCING ARMATURE BARS
WO2010112703A1 (en) Method of manufacturing devices for connecting reinforcing bars and set of reinforcing bars for concrete
FR2634856A1 (en) Concrete pipe
BE497537A (en)
FR2873184A1 (en) Compression fitting for aeronautic field, has titanium ring with ellipsoidal shape front part defining fastening point, median part defining shoulder and conical groove, and rear part defining another point and outer conical section
FR2652773A1 (en) Method of obtaining a flanged bush, especially intended for the connection of a pipe to a coupling, and device for its implementation
FR2732090A1 (en) Leakproof pipe connection
FR2584119A1 (en) EXPANDABLE DEVICE, APPLICABLE IN PARTICULAR TO KEYING IN CONSTRUCTIONS AND CIVIL ENGINEERING WORKS
FR2539210A1 (en) Method for producing a structure formed by assembly with interpenetration, of at least two sections, and structures obtained by the said method

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AC Divisional application: reference to earlier application

Ref document number: 2504117

Country of ref document: EP

Kind code of ref document: P

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20191212

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20220221

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AC Divisional application: reference to earlier application

Ref document number: 2504117

Country of ref document: EP

Kind code of ref document: P

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602010068360

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1505205

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220815

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

Effective date: 20221018

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20220720

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221121

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221020

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1505205

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220720

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221120

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20221021

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602010068360

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

26N No opposition filed

Effective date: 20230421

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221115

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221115

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20231019

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20231019

Year of fee payment: 14

Ref country code: FR

Payment date: 20231116

Year of fee payment: 14

Ref country code: DK

Payment date: 20231019

Year of fee payment: 14

Ref country code: DE

Payment date: 20231019

Year of fee payment: 14

Ref country code: CH

Payment date: 20231201

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20231019

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20101115

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220720