EP0181331A1 - Claw extractor - Google Patents

Claw extractor

Info

Publication number
EP0181331A1
EP0181331A1 EP84902694A EP84902694A EP0181331A1 EP 0181331 A1 EP0181331 A1 EP 0181331A1 EP 84902694 A EP84902694 A EP 84902694A EP 84902694 A EP84902694 A EP 84902694A EP 0181331 A1 EP0181331 A1 EP 0181331A1
Authority
EP
European Patent Office
Prior art keywords
extractor
claws
guide
claw
axis
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.)
Pending
Application number
EP84902694A
Other languages
German (de)
French (fr)
Inventor
Paul Louis Joseph Tilman
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.)
ArcelorMittal Liege Upstream SA
Original Assignee
Cockerill Sambre SA
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 Cockerill Sambre SA filed Critical Cockerill Sambre SA
Publication of EP0181331A1 publication Critical patent/EP0181331A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/023—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same using screws
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53796—Puller or pusher means, contained force multiplying operator
    • Y10T29/5383—Puller or pusher means, contained force multiplying operator having fluid operator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53796—Puller or pusher means, contained force multiplying operator
    • Y10T29/53848—Puller or pusher means, contained force multiplying operator having screw operator
    • Y10T29/53857—Central screw, work-engagers around screw
    • Y10T29/53861—Work-engager arms along or parallel to screw
    • Y10T29/5387—Pivotal arms

Definitions

  • the present invention relates to a claw extractor, in particular a large claw extractor, comprising improvements intended to facilitate its handling.
  • claw extractors are known in which the claws are articulated directly on the body of the claw extractor and comprise, at the end opposite to that intended to come into contact with the part to be separated, guide means which are in direct relation with a control member such as a cam plate for example. This is intended to spread or bring the claws closer to one another, as well as to keep them in contact with the part to be removed, as long as they do not stick to it thanks to the force exerted by the extractor.
  • the present invention therefore aims to provide a claw extractor of improved construction which can be easily manipulated by an operator who can guide the extractor as well as adjust the gap between the claws until the pressure of the rod on the part to be separated is sufficient for the claws to remain in contact with it.
  • Another object of the present invention is to provide a claw extractor which, thanks to an improved construction, self-clamping of the claws in order to ensure a good adaptation of the extractor to any part to be separated.
  • a claw extractor characterized in that it comprises a guide which is free to rotate about the axis of the extractor but fixed in translation along this axis, said guide comprising grooves which make it possible to guide the simultaneous movement of the claws by an angular rotation thereof around the axis of the extractor.
  • said guide advantageously consists of a disc, mounted at the rear end of the extractor, which is opposite the end intended to come into contact with the parts to be separated, said disc having grooves in which the rear ends of the claws slide and which are arranged so as to extend from the center towards the outside.
  • said guide advantageously consists of a disc mounted at the rear end of the ex-tractor, which is opposite the end intended to come into contact with the parts to be separated, said disc carrying grooves extending from the center towards the outside, in which slides pins fixed to the connecting rods, which are articulated on the claws and, in addition, connected to them by stirrups preventing the free ro ⁇ tation of the claws relative to the connecting rods but allow sliding of the claws therein.
  • the operator can continuously adjust the distance between the claws by actuating the guide so that it rotates at a certain angle around the axis of the extractor.
  • the nipples are moved away from the extractor by pivoting the rod around the point of articulation on the extractor to bring the claws closer or further apart from one another.
  • said guide may advantageously include a control arm.
  • - fig. 1 is a partial view of a claw extractor, of which only one claw is
  • - fig. 2 is a plan view of the guide used in the embodiment of FIG. 1.
  • the present description relates to a hydraulic claw extractor. This does not however exclude that the present invention could also apply to a manual extractor, for example.
  • the extractor 1 consists of a hydraulic cylinder (or other) 2 actuated by a hand pump (not shown), for example or connected to a source (not shown) of hydraulic fluid.
  • a hand pump for example or connected to a source (not shown) of hydraulic fluid.
  • To the cylinder of the jack are fixed three connecting rods 3 which are also connected to the corresponding claws 5.
  • the claws 5 have several holes 7 which are intended to allow the adjustment of the spacing between the part 9 to be removed from the shaft 10 and the rod 12 which will bear against the end of this shaft 10.
  • the claw extractor comprises a guide 15 which is provided with grooves 17, preferably curved, in which slide pins 19 which are fixed to the connecting rods 3.
  • the pins approach or move away from said axis, depending on the direction of movement, given the arrangement and the particular shape of the grooves 17.
  • the connecting rod 3 pivots around its articulation point 23 to move the claws 5 away from or closer to one another.
  • a stirrup 25 prevents the free rotation of the grif ⁇ fes around the articulation point 27 but allows the claw 5 to slide therein when the angular position of the connecting rod 3 is modified by the action of the guide 15.
  • the stud 19 is fixed to the connecting rod 3 by means of a sheet of steel folded partially around said connecting rod 3, in order to avoid movement- relative ment of the stud 19 with respect to said connecting rod 3.
  • any other form of assembly such as two bolts or two rivets, for example.
  • Another advantage consists in that the guide 15, in the form of application shown, is not very bulky and can be accommodated in the usual boxes delivered with this kind of equipment.
  • an additional advantage is that said guide can be adapted to any existing extractor and that existing equipment can be transformed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Assembly (AREA)
  • Clamps And Clips (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Manipulator (AREA)
  • Apparatus For Making Beverages (AREA)

Abstract

PCT No. PCT/BE84/00018 Sec. 371 Date Mar. 15, 1985 Sec. 102(e) Date Mar. 15, 1985 PCT Filed Jul. 17, 1984 PCT Pub. No. WO85/00546 PCT Pub. Date Feb. 14, 1985.A claw extractor for pulling a part from a shaft. The extractor comprises a plurality of claws for gripping the part and a drive element for engaging the shaft. Provided on the rear end of the tool is a guide provided with arcuate grooves extending from the inside to the outside. Slide stubs, cooperatively connected to the claws, are received within the grooves to thereby move the claws.

Description

EXTRACTEUR A GRIFFES. La présente invention concerne un extracteur à griffes, notamment un extracteur à griffes de grandes dimensions, comportant des perfectionnements destinés à faciliter sa manipulation. CLAW EXTRACTOR. The present invention relates to a claw extractor, in particular a large claw extractor, comprising improvements intended to facilitate its handling.
Par les documents CH-A-248 279, FR-A-866 328 et GB-A-363 282, on connaît des extracteurs à griffes dans lesquels les griffes sont articulées directement sur le corps de l'extracteur à griffes et comportent, à l'extré- mité opposée à celle destinée à venir en contact avec la pièce à séparer, des moyens de guidage qui sont en rela¬ tion directe avec un organe de commande tel qu'un plateau à cames par exemple. Celui-ci est destiné à écarter ou rap¬ procher les griffes l'une de l'autre, ainsi qu'à les main- tenir en contact avec la pièce à retirer, tant qu'elles ne tiennent pas à celle-ci grâce à la force exerceepar l'extracteur.From documents CH-A-248 279, FR-A-866 328 and GB-A-363 282, claw extractors are known in which the claws are articulated directly on the body of the claw extractor and comprise, at the end opposite to that intended to come into contact with the part to be separated, guide means which are in direct relation with a control member such as a cam plate for example. This is intended to spread or bring the claws closer to one another, as well as to keep them in contact with the part to be removed, as long as they do not stick to it thanks to the force exerted by the extractor.
Cependant, dans les dispositifs connus, la bonne adaptation de l'extracteur à griffes à la pièce à retirer est difficile et tributaire uniquement de la rotation angulaire du plateau à cames et, par conséquent, ne permettent pas un auto-serrage des griffes dans les cas d'une pièce à retirer irrégulière conique ou usée.However, in known devices, the correct adaptation of the claw extractor to the part to be removed is difficult and depends only on the angular rotation of the cam plate and, therefore, do not allow the claws to self-tighten in the case of an irregular tapered or worn part to be removed.
La présente invention vise donc à fournir un extrac¬ teur à griffes de construction perfectionnée qui peut être manipulé aisément par un opérateur qui peut guider l'extracteur ainsi que régler l'écarte ent des griffes jusqu'à ce que la pression de la tige sur la pièce à séparer soit suffisante pour que les griffes restent en contact avec celle-ci . Un autre but de la présente invention vise à fournir un extracteur à griffes qui permet, grâce à une construction améliorée, un autoserrage des griffes en vue d'assurer une bonne adaptation de 1'extracteur à toute pièce à séparer. Le but de la présente invention est atteint par un extracteur à griffes caractérisé en ce qu'il comporte un guide qui est libre en rotation autour de l'axe de l'extracteur mais fixe en translation le long de cet axe, ledit guide comprenant des rainures qui permettent de guider le déplacement simultané des griffes par une rota¬ tion angulaire de celui-ci autour de l'axe de l'extrac¬ teur. Dans une première forme d'exécution, ledit guide consiste avantageusement en un disque, monté à l'extrémité arrière de l'extracteur, qui est opposée à l'extrémité destinée à venir en contact avec les pièces à séparer, ledit disque comportant des rainures dans les- quelles coulissent les extrémités arrières des griffes et qui sont agencées de manière à s'étendre du centre vers 1'extérieur.The present invention therefore aims to provide a claw extractor of improved construction which can be easily manipulated by an operator who can guide the extractor as well as adjust the gap between the claws until the pressure of the rod on the part to be separated is sufficient for the claws to remain in contact with it. Another object of the present invention is to provide a claw extractor which, thanks to an improved construction, self-clamping of the claws in order to ensure a good adaptation of the extractor to any part to be separated. The object of the present invention is achieved by a claw extractor characterized in that it comprises a guide which is free to rotate about the axis of the extractor but fixed in translation along this axis, said guide comprising grooves which make it possible to guide the simultaneous movement of the claws by an angular rotation thereof around the axis of the extractor. In a first embodiment, said guide advantageously consists of a disc, mounted at the rear end of the extractor, which is opposite the end intended to come into contact with the parts to be separated, said disc having grooves in which the rear ends of the claws slide and which are arranged so as to extend from the center towards the outside.
Suivant une forme d'exécution préférée de la présente l'invention, ledit guide consiste avantageuse- ment en un disque monté à l'extrémité arrière de l'ex¬ tracteur, qui est opposée à l'extrémité destinée à venir en contact avec les pièces à séparer, ledit disque com¬ portant des rainures s'étendant du centre vers l'exté¬ rieur, dans lesquelles coulissent des tétons fixés aux bielles, qui sont articulées sur les griffes et, en ou¬ tre, reliées à celles-ci par des étriers empêchant la ro¬ tation libre des griffes par rapport aux bielles mais permettent un glissement des griffes dans ceux-ci.According to a preferred embodiment of the present invention, said guide advantageously consists of a disc mounted at the rear end of the ex-tractor, which is opposite the end intended to come into contact with the parts to be separated, said disc carrying grooves extending from the center towards the outside, in which slides pins fixed to the connecting rods, which are articulated on the claws and, in addition, connected to them by stirrups preventing the free ro¬ tation of the claws relative to the connecting rods but allow sliding of the claws therein.
De cette manière, l'opérateur peut régler, de manière continue l'écarte ent des griffes en actionnant le guide de telle sorte qu'il tourne d'un certain angle autour de l'axe de l'extracteur. Ainsi, les tétons sont éloignés de l'extracteur en faisant pivoter la bielle autour du point d'articulation sur l'extracteur pour rap- procher ou éloigner les griffes l'une de l'autre.In this way, the operator can continuously adjust the distance between the claws by actuating the guide so that it rotates at a certain angle around the axis of the extractor. Thus, the nipples are moved away from the extractor by pivoting the rod around the point of articulation on the extractor to bring the claws closer or further apart from one another.
Pour faciliter les manipulations par l'opéra¬ teur, ledit guide peut avantageusement comporter un bras de commande.To facilitate handling by the operator, said guide may advantageously include a control arm.
D'autres détails et avantages apparaîtront plus clairement à la description des figures annexées dans lesquelles :Other details and advantages will appear more clearly from the description of the appended figures in which:
- la fig. 1 est une vue partielle d'un extracteur à grif- fes, dont une seule griffe est- fig. 1 is a partial view of a claw extractor, of which only one claw is
suivant une forme d'exécution de l'invention, et - la fig. 2 est une vue en plan du guide utilisé dans la forme d'exécution de la fig. 1. A titre d'exemple, la présente description con¬ cerne un extracteur à griffes hydraulique. Ceci n'exclut cependant pas que la présente invention puisse s'appli¬ quer également à un extracteur manuel, par exemple. according to one embodiment of the invention, and - fig. 2 is a plan view of the guide used in the embodiment of FIG. 1. By way of example, the present description relates to a hydraulic claw extractor. This does not however exclude that the present invention could also apply to a manual extractor, for example.
L'extracteur 1 se compose d'un vérin hydrauli- que (ou autre)2 actionné par une pompe à main (non repré¬ sentée) , par exemple ou relié à une source (non représen¬ tée) de fluide hydraulique. Au cylindre du vérin sont fixées trois bielles 3 qui sont également reliées aux griffes 5 correspondantes . Les griffes 5 présentent plusieurs trous 7 qui sont destinés à permettre le régla¬ ge de l'ecartement entre la pièce 9 à retirer de l'arbre 10 et la tige 12 qui s'appuiera contre le bout de cet arbre 10.The extractor 1 consists of a hydraulic cylinder (or other) 2 actuated by a hand pump (not shown), for example or connected to a source (not shown) of hydraulic fluid. To the cylinder of the jack are fixed three connecting rods 3 which are also connected to the corresponding claws 5. The claws 5 have several holes 7 which are intended to allow the adjustment of the spacing between the part 9 to be removed from the shaft 10 and the rod 12 which will bear against the end of this shaft 10.
Suivant l'invention, l'extracteur à griffes comporte un guide 15 qui est muni de rainures 17, de préférence courbes, dans lesquelles coulissent des te'tons 19 qui sont fixés aux bielles 3. En faisant tourner le guide autour de l'axe de l'extracteur 1 au moyen d'un bras 21, les te'tons se rapprochent ou s -éloignent dudit axe, selon la direction du mouvement, étant donné la disposition et la forme particulière des rainures 17. De ce fait, la bielle 3 pivote autour de son point d'articu¬ lation 23 pour éloigner ou rapprocher les griffes 5 l'une de l'autre. Un étrier 25 empêche la libre rotation des grif¬ fes autour du point d'articulation 27 mais permet le glissement de la griffe 5 dans celui-ci lorsque la posi¬ tion angulaire de la bielle 3 est modifiée par l'action du guide 15. Suivant une forme d'exécution avantageuse de la présente invention, le téton 19 est fixé à la bielle 3 par l'intermédiaire d'une tôle d'acier pliée partielle¬ ment autour de ladite bielle 3, en vue d'éviter un mouve- ment relatif du téton 19 par rapport à ladite bielle 3. On peut cependant également prévoir toute autre forme d'assemblage, comme deux boulons ou deux rivets, par exemple. Un avantage obtenu par la présente invention consiste en ce que les opérations de manipulation sont facilitées de beaucoup et qu'un seul opérateur suffit pour employer cet appareillage, même lorsque les dimen¬ sions sont assez importantes. Bien entendu, lorsque l'extracteur est de grandes dimensions il sera suspendu à un pont roulant ou autre, l'opération de mise en place consistant simplement à amener l'appareillage en position et à régler à l'aide du dispositif de l'invention l'ecar¬ tement des griffes pour pouvoir le disposer convenable- ment sur la pièce 9.According to the invention, the claw extractor comprises a guide 15 which is provided with grooves 17, preferably curved, in which slide pins 19 which are fixed to the connecting rods 3. By rotating the guide around the axis of extractor 1 by means of an arm 21, the pins approach or move away from said axis, depending on the direction of movement, given the arrangement and the particular shape of the grooves 17. As a result, the connecting rod 3 pivots around its articulation point 23 to move the claws 5 away from or closer to one another. A stirrup 25 prevents the free rotation of the grif¬ fes around the articulation point 27 but allows the claw 5 to slide therein when the angular position of the connecting rod 3 is modified by the action of the guide 15. According to an advantageous embodiment of the present invention, the stud 19 is fixed to the connecting rod 3 by means of a sheet of steel folded partially around said connecting rod 3, in order to avoid movement- relative ment of the stud 19 with respect to said connecting rod 3. However, it is also possible to provide any other form of assembly, such as two bolts or two rivets, for example. An advantage obtained by the present invention consists in that the handling operations are much easier and that a single operator is sufficient to use this apparatus, even when the dimensions are large enough. Of course, when the extractor is large, it will be suspended from an overhead crane or the like, the positioning operation consisting simply in bringing the apparatus into position and adjusting with the device of the invention. the spreading of the claws in order to be able to arrange it properly on the part 9.
Un autre avantage consiste en ce que le guide 15, sous la forme d'application représentée est peu en¬ combrant et peut être logé dans les coffrets habituels livrés avec ce genre d'appareillage. un avantage complémentaire consiste en ce que ledit guide peut être adapté à tout extracteur existant et que du matériel existant peut être transformé. Another advantage consists in that the guide 15, in the form of application shown, is not very bulky and can be accommodated in the usual boxes delivered with this kind of equipment. an additional advantage is that said guide can be adapted to any existing extractor and that existing equipment can be transformed.

Claims

REVENDICATIONS. 1. Extracteur à griffes (1) comportant une tige filetée qui peut tourner dans un écrou ou une tige de piston (12) qui peut coulisser dans un cylindre (2), le- dit écrou ou ledit cylindre (2) comportant au moins trois griffes (5) qui sont destinées à accrocher la pièce (9) à retirer de son axe (10), tandis que la tige (12) ap¬ puie sur cet axe (ÎO), les griffes (5) étant reliées au corps (2) de l'extracteur par l'intermédiaire d'une bielle (3), extracteur caractérisé en ce qu'il comporte un guide (15) qui est libre en rotation autour de l'axe de l'extracteur mais fixe en translation le long de cet axe, ledit guide (15) comportant des rainures (17) qui permettent de guider le déplacement simultané des griffes (5) par une rotation angulaire de celui-ci autour de l'axe de l'extracteur.CLAIMS. 1. Claw extractor (1) comprising a threaded rod which can turn in a nut or a piston rod (12) which can slide in a cylinder (2), the said nut or said cylinder (2) comprising at least three claws (5) which are intended to hang the part (9) to be removed from its axis (10), while the rod (12) presses on this axis (ÎO), the claws (5) being connected to the body ( 2) of the extractor by means of a connecting rod (3), an extractor characterized in that it comprises a guide (15) which is free to rotate about the axis of the extractor but fixed in translation on along this axis, said guide (15) comprising grooves (17) which make it possible to guide the simultaneous movement of the claws (5) by an angular rotation of the latter around the axis of the extractor.
2. Extracteur à griffes suivant la revendica¬ tion 1 caractérisé en ce que le guide consiste en un dis¬ que monté à l'extrémité arrière de l'extracteur, qui est opposée à l'extrémité destinée à venir en contact avec les pièces à séparer, ledit disque comportant des rainu¬ res dans lesquelles coulissent les extrémités arrières des griffes et qui sont agencées de manière à s'étendre du centre vers l'extérieur. 2. Claw extractor according to claim 1 characterized in that the guide consists of a dis¬ that mounted at the rear end of the extractor, which is opposite the end intended to come into contact with the parts to separate, said disc having grooves in which the rear ends of the claws slide and which are arranged so as to extend from the center towards the outside.
3. Extracteur à griffes suivant la revendica¬ tion 1, caractérisé en ce que ledit guide (15) consiste en un disque monté à l'extrémité arrière de l'extracteur qui est opposée à l'extrémité destinée à venir en contact avec les pièces à séparer (9, 10), ledit disque (15) com- portant des rainures (17) s'étendant du centre vers l'ex¬ térieur dans lesquelles coulissent des te'tons (19) fixés aux bielles (3) qui sont articulées sur les griffes (5) et, en outre, reliées à celles-ci par des étriers (25) em¬ pêchant la rotation libre des griffes (5) par rapport aux bielles (3) mais permettant un glissement des griffes dans ceux-ci.3. Claw extractor according to claim 1, characterized in that said guide (15) consists of a disc mounted at the rear end of the extractor which is opposite the end intended to come into contact with the parts to separate (9, 10), said disc (15) comprising grooves (17) extending from the center towards the outside in which slide pins (19) fixed to the connecting rods (3) which are articulated on the claws (5) and, moreover, connected to these by stirrups (25) em¬ fishing the free rotation of the claws (5) relative to the connecting rods (3) but allowing the claws to slide in them- this.
4. Extracteur à griffes suivant la revendica¬ tion 3, caractérisé en ce que ledit guide (15) comporte4. Claw extractor according to revendica¬ tion 3, characterized in that said guide (15) comprises
OV fa~~ υ.n bras de commande (21).OV fa ~ ~ υ.n control arm (21).
5. Extracteur à griffes suivant l'une quelcon¬ que des revendications précédentes, caractérisé en ce que le guide (25) comporte des rainures courbes (17), s'éten¬ dant de l'intérieur vers l'extérieur. 5. Claw extractor according to any one of the preceding claims, characterized in that the guide (25) has curved grooves (17), extending from the inside to the outside.
EP84902694A 1983-07-18 1984-07-17 Claw extractor Pending EP0181331A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU84921 1983-07-18
LU84921A LU84921A1 (en) 1983-07-18 1983-07-18 CLAW EXTRACTOR

Publications (1)

Publication Number Publication Date
EP0181331A1 true EP0181331A1 (en) 1986-05-21

Family

ID=19730122

Family Applications (2)

Application Number Title Priority Date Filing Date
EP84902694A Pending EP0181331A1 (en) 1983-07-18 1984-07-17 Claw extractor
EP84870105A Expired EP0135490B1 (en) 1983-07-18 1984-07-17 Extractor with grips

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP84870105A Expired EP0135490B1 (en) 1983-07-18 1984-07-17 Extractor with grips

Country Status (7)

Country Link
US (1) US4648166A (en)
EP (2) EP0181331A1 (en)
AT (1) ATE31498T1 (en)
BR (1) BR8407332A (en)
DE (1) DE3468188D1 (en)
LU (1) LU84921A1 (en)
WO (1) WO1985000546A1 (en)

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US11815132B2 (en) 2020-03-13 2023-11-14 Tiger Tool International Incorporated Bushing insertion systems and methods
US20230138801A1 (en) 2020-03-13 2023-05-04 Tiger Tool International Incorporated Systems And Methods For Inserting And Removing Bushing Assemblies
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CN112605937B (en) * 2020-12-29 2022-12-09 中北大学 Docking mechanism and automatic docking device
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Also Published As

Publication number Publication date
LU84921A1 (en) 1985-04-17
BR8407332A (en) 1986-09-23
WO1985000546A1 (en) 1985-02-14
ATE31498T1 (en) 1988-01-15
US4648166A (en) 1987-03-10
EP0135490B1 (en) 1987-12-23
EP0135490A1 (en) 1985-03-27
DE3468188D1 (en) 1988-02-04

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