EP0397570A1 - Tube end enlarging or expanding tool - Google Patents

Tube end enlarging or expanding tool Download PDF

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Publication number
EP0397570A1
EP0397570A1 EP90401241A EP90401241A EP0397570A1 EP 0397570 A1 EP0397570 A1 EP 0397570A1 EP 90401241 A EP90401241 A EP 90401241A EP 90401241 A EP90401241 A EP 90401241A EP 0397570 A1 EP0397570 A1 EP 0397570A1
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EP
European Patent Office
Prior art keywords
mandrel
handle
axis
movable
movable handle
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Granted
Application number
EP90401241A
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German (de)
French (fr)
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EP0397570B1 (en
Inventor
Jean Marie Tandart
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Virax SA
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Virax SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/02—Enlarging
    • B21D41/026—Enlarging by means of mandrels

Definitions

  • the present invention relates to an apparatus for widening or flaring the ends of tubes or the like comprising a movable handle and a fixed handle integral with a body through which a mandrel passes, which under the action of an external force applied to the sleeves moves axially and forces radially apart from each other expandable jaws grouped in a clearance which with the threaded ring holding them against the body of the device constitutes an interchangeable expansion tool.
  • One of the aims of the present invention is to remedy these difficulties in returning the mandrel by connecting it to the movable handle by an articulation comprising a link.
  • the proposed solution allows to apply if necessary to the mandrel an extraction force which is only limited by the force developed by the operator on the two handles of the device.
  • the apparatus intended to widen the ends of the tubes or the like shown in FIG. 1, comprises a body 1, a jaw expansion tool 12, a mandrel 2, a rod 3 and two sleeves, one of which is movable 4 is articulated directly on the mandrel while being retained close to the body by the link which consists of one or more sheet thicknesses.
  • the body and the fixed handle 7 which carries it have a plane of symmetry which must coincide with that of the movable handle and its front groove 5.
  • the support provided by the sides of the link at the level of the groove acting as yoke is reinforced by the guide resulting from the insertion of the shank 6 of the mandrel in this same groove, because the flat shape obtained by double milling of said shank is adjusted to the width of the yoke.
  • the diameter of the base circumference of the conical end 8 of the mandrel being greater than that of the cylindrical part sliding in the body 1, said conical part cannot enter the bore of said body beyond the shoulder 9 marking the bottom of the chamber 10.
  • the mandrel is immobilized against this stop, its conical end is no longer in contact with the jaws of the tool which are therefore gathered together against each other under the action of the spring 11.
  • the transition from this position to that shown in FIG. 1 is only an approach phase preceding the expansion phase of the jaws.
  • the link 3 which pivots around an axis 13 secured to the body of the device provides the movable handle with a point of 'support on said body such that the multiplication ratio of the force supplied by the operator increases as this movable handle approaches the fixed handle.
  • the link 3 whose articulation axes 13 and 14 are identical to that 15 of the tail of the mandrel on the movable handle, has a recess 16 which gives it a specific arched shape leaving free a sufficient space for the tail 6 of the mandrel not to strike said link when the movable handle approaches the fixed handle.
  • the length T of the lever arm existing between the articulation center 14 of the link on the movable arm and the extension of the axis A of the mandrel 2 decreases progressively until it is equal to a third of the distance X, that is to say four millimeters when the handle 17 of the movable handle comes to touch that of the fixed handle 18.
  • This device which can receive most of the tools currently available in specialized shops, allows for the sockets necessary for the connection of annealed copper tubes that are encountered in sanitary installations.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manipulator (AREA)
  • Surgical Instruments (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

The subject of the invention is a novel apparatus intended for enlarging the ends of tubes which comprises a body (1), an expansion tool, a mandrel (2), a connecting link (3) and two handles, one (7) of which is solidly fixed to the body while the other (4) is connected to the said body by means of the connecting link which imparts to it a movable pointer bearing enabling it to transmit to the mandrel, to which it is connected by means of a direct articulation, an axial force which increases as the said movable handle approaches the fixed handle. Once the expansion of the pipe has been carried out, the mandrel is extracted from inside the set of jaws of the tool by means of the traction force which is exerted thereon by the movable arm which the operator brings back to its initial position. This apparatus makes it possible to produce the fittings required for connecting the copper piping of sanitary installations. <IMAGE>

Description

La présente invention concerne un appareil pour élargir ou évaser les extrémités des tubes ou articles similaires comprenant un manche mobile et un manche fixe solidaire d'un corps traversé par un mandrin, lequel sous l'action d'une force extérieure appliquée sur les manches se déplace axialement et oblige s'écarter radialement les unes des autres des mâchoires expansibles regroupées en un jeu qui avec la bague filetée les retenant contre le corps de l'appareil constitue un outil d'expansion interchangeable.The present invention relates to an apparatus for widening or flaring the ends of tubes or the like comprising a movable handle and a fixed handle integral with a body through which a mandrel passes, which under the action of an external force applied to the sleeves moves axially and forces radially apart from each other expandable jaws grouped in a clearance which with the threaded ring holding them against the body of the device constitutes an interchangeable expansion tool.

Le brevet américain 2 999 529 du 12 septembre 1961 et le brevet français 1 581 127 du 25 juillet 1968 ont pour objet des appareils de ce type, mais dans ces derniers, c'est un excentrique ou une came solidaire du levier mobile qui pousse le mandrin dans l'axe du jeu de mâchoires en appliquant sur la face opposée à son extrémité conique l'effort résultant de l'action de l'opérateur. Ainsi en absence de moyen de traction dudit mandrin, son retour ne résulte que du rapprochement des mâchoires sous l'action d'un moyen de rappel en position de repos, qui est soit un ressort, soit un jonc élastique monté serrant sur la circonférence extérieure du jeu de mâchoires.The American patent 2 999 529 of September 12, 1961 and the French patent 1 581 127 of July 25, 1968 relate to devices of this type, but in the latter, it is an eccentric or a cam integral with the movable lever which pushes the mandrel in the axis of the set of jaws by applying the force resulting from the operator's action to the face opposite its conical end. Thus, in the absence of means for pulling said mandrel, its return only results from the approximation of the jaws under the action of a return means in the rest position, which is either a spring or an elastic ring mounted tightening on the outer circumference of the jaw set.

Quelque soit les outils utilisés avec ces appareils, l'opérateur éprouve toujours des difficultés pour obtenir le recul du mandrin une fois que l'extrémité du tube a été élargie. Cela est dû à ce que l'effort développé par le ressort ou le jonc élastique est insuffisant pour vaincre les frottements inévitables qui existent et s'opposent à tout déplacement au niveau des zones de contact dudit mandrin avec les mâchoires et avec le corps.Whatever the tools used with these devices, the operator always has difficulty obtaining the recoil of the mandrel once the end of the tube has been widened. This is due to the fact that the force developed by the spring or the elastic ring is insufficient to overcome the inevitable friction which exists and which prevents any movement at the level of the contact zones of said mandrel with the jaws and with the body.

L'un des buts de la présente invention est de remédier à ces difficultés de retour du mandrin en le reliant au manche mobile par une articulation comprenant une biellette. La solution proposée permet d'appliquer si nécessaire au mandrin un effort d'extraction qui n'est limité que par la force développée par l'opérateur sur les deux manches de l'appareil.One of the aims of the present invention is to remedy these difficulties in returning the mandrel by connecting it to the movable handle by an articulation comprising a link. The proposed solution allows to apply if necessary to the mandrel an extraction force which is only limited by the force developed by the operator on the two handles of the device.

Dans ce qui suit, l'invention est exposée en détail à l'aide de dessins représentant seulement un mode d'exécution donné à titre d'exemple non limitatif :

  • - La figure 1 est une vue en coupe longitudinale d'un appareil complet représenté dans la position qui lui permet de recevoir l'extrémité du tube à travailler.
  • - La figure 2 est une vue latérale de l'appareil sans outil représenté bras fermés.
In what follows, the invention is explained in detail using drawings representing only one embodiment given by way of non-limiting example:
  • - Figure 1 is a longitudinal sectional view of a complete apparatus shown in the position which allows it to receive the end of the tube to be worked.
  • - Figure 2 is a side view of the toolless tool shown with arms closed.

L'appareil destiné à élargir les extrémités des tubes ou similaires représenté figure 1, comprend un corps 1, un outil d'expansion à mâchoires 12, un mandrin 2, une biellette 3 et deux manches dont l'un mobile 4 est articulé directement sur le mandrin tout en étant retenu près du corps par la biellette qui est constituée d'une ou de plusieurs épaisseurs de tôle. Le corps et le manche fixe 7 qui le porte possèdent un plan de symétrie qui doit coïncider avec celui du manche mobile et de sa gorge frontale 5. Pour cela, le maintien assuré par les flancs de la biellette au niveau de la gorge faisant office de chape est renforcé par le guidage résultant de l'insertion de la queue 6 du mandrin dans cette même gorge, car la forme méplate obtenue par double fraisage de ladite queue est ajustée à la largeur de la chape. Le diamètre de la circonférence de base de l'extrémité conique 8 du mandrin étant supérieur à celui de la partie cylindrique coulissant dans le corps 1, ladite partie conique ne peut rentrer dans l'alésage dudit corps au-delà de l'épaulement 9 marquant le fond de la chambre 10. De plus, lorsque le mandrin est immobilisé contre cette butée, son extrémité conique n'est plus en contact avec les mâchoires de l'outil qui de ce fait se trouvent rassemblées les unes contre les autres sous l'action du ressort 11. Le passage de cette position à celle représentée figure 1 n'est qu'une phase d'approche précédant la phase d'expansion des mâchoires.The apparatus intended to widen the ends of the tubes or the like shown in FIG. 1, comprises a body 1, a jaw expansion tool 12, a mandrel 2, a rod 3 and two sleeves, one of which is movable 4 is articulated directly on the mandrel while being retained close to the body by the link which consists of one or more sheet thicknesses. The body and the fixed handle 7 which carries it have a plane of symmetry which must coincide with that of the movable handle and its front groove 5. For this, the support provided by the sides of the link at the level of the groove acting as yoke is reinforced by the guide resulting from the insertion of the shank 6 of the mandrel in this same groove, because the flat shape obtained by double milling of said shank is adjusted to the width of the yoke. The diameter of the base circumference of the conical end 8 of the mandrel being greater than that of the cylindrical part sliding in the body 1, said conical part cannot enter the bore of said body beyond the shoulder 9 marking the bottom of the chamber 10. In addition, when the mandrel is immobilized against this stop, its conical end is no longer in contact with the jaws of the tool which are therefore gathered together against each other under the action of the spring 11. The transition from this position to that shown in FIG. 1 is only an approach phase preceding the expansion phase of the jaws.

Pour que l'engagement de l'extrémité conique du mandrin entre les mâchoires de l'outil ne requiert pas de la part de l'opérateur un effort démesuré sur les manches, la biellette 3 qui pivote autour d'un axe 13 solidaire du corps de l'appareil assure au manche mobile un point d'appui sur ledit corps tel que le rapport de multiplication de l'effort fourni par l'opérateur augmente au fur et à mesure que ce manche mobile se rapproche du manche fixe.So that the engagement of the conical end of the mandrel between the jaws of the tool does not require an excessive effort on the part of the operator on the handles, the link 3 which pivots around an axis 13 secured to the body of the device provides the movable handle with a point of 'support on said body such that the multiplication ratio of the force supplied by the operator increases as this movable handle approaches the fixed handle.

Toujours sur la figure 1, on voit que la biellette 3 dont les axes d'articulation 13 et 14 sont identiques à celui 15 de la queue du mandrin sur le manche mobile, présente un évidement 16 qui lui confère une forme cambrée spécifique laissant libre un espace suffisant pour que la queue 6 du mandrin ne vienne pas heurter ladite biellette lorsque le manche mobile se rapproche du manche fixe.Still in FIG. 1, it can be seen that the link 3 whose articulation axes 13 and 14 are identical to that 15 of the tail of the mandrel on the movable handle, has a recess 16 which gives it a specific arched shape leaving free a sufficient space for the tail 6 of the mandrel not to strike said link when the movable handle approaches the fixed handle.

En se reportant à la figure 2 qui représente une vue latérale du même appareil sans l'outil d'expansion, avec réduction d'échelle de 50% et rapprochement des manches, on constate que la distance X séparant le centre de l'axe d'articulation 13 de la biellette sur le corps et l'axe A du mandrin est égale à la distance Y séparant les centres des deux axes d'articulation 14, 15, du manche mobile. De même la distance Z séparant les centres des deux axes 13, 14 de la biellette est égale à deux fois et demie la distance Y séparant les centres des deux axes du manche mobile.Referring to Figure 2 which shows a side view of the same device without the expansion tool, with scale reduction of 50% and approximation of the sleeves, we see that the distance X separating the center of the axis d 'articulation 13 of the link on the body and the axis A of the mandrel is equal to the distance Y separating the centers of the two axes of articulation 14, 15, of the movable handle. Similarly, the distance Z separating the centers of the two axes 13, 14 of the link is equal to two and a half times the distance Y separating the centers of the two axes of the movable handle.

L'engagement du mandrin entre les mâchoires de l'outil vissé sur le corps de l'appareil étant obtenu par le rapprochement du manche mobile du manche fixe, lesdites mâchoires s'écartent de plus en plus les unes des autres au fur et à mesure que le manche mobile se rapproche du manche fixe. Pour obtenir une expansion au diamètre souhaité du tube coiffant les mâchoires, les forces radiales engendrées entre ces mâchoires doivent augmenter sans cesse. Ainsi pour limiter à une valeur acceptable l'accroissement de l'effort demandé à l'opérateur, la longueur T du bras de levier existant entre le centre d'articulation 14 de la biellette sur le bras mobile et le prolongement de l'axe A du mandrin 2 diminue progressivement jusqu'à être égale au tiers de la distance X, soit quatre millimètres lorsque la poignée 17 du manche mobile vient toucher celle 18 du fixe.The engagement of the mandrel between the jaws of the tool screwed onto the body of the device being obtained by bringing the movable handle closer to the fixed handle, said jaws move away from each other more and more as and when that the movable handle approaches the fixed handle. To obtain an expansion to the desired diameter of the tube covering the jaws, the radial forces generated between these jaws must constantly increase. Thus, to limit the increase in effort required from the operator to an acceptable value, the length T of the lever arm existing between the articulation center 14 of the link on the movable arm and the extension of the axis A of the mandrel 2 decreases progressively until it is equal to a third of the distance X, that is to say four millimeters when the handle 17 of the movable handle comes to touch that of the fixed handle 18.

A la fin de la phase d'expansion, lorsque les mâchoires ont été écartées au maximum permis par le diamètre intérieur de la bague 12a servant à fixer l'outil, l'articulation directe du mandrin sur le manche mobile permet à l'opérateur d'obtenir le retour complet du mandrin à sa position d'origine en évitant son coincement.At the end of the expansion phase, when the jaws have been moved apart to the maximum allowed by the internal diameter of the ring 12a used to fix the tool, the direct articulation of the mandrel on the movable handle allows the operator to '' obtain the complete return of the mandrel to its original position avoiding its jamming.

Cet appareil qui peut recevoir la plupart des outils actuellement disponibles dans les commerces spécialisés permet de réaliser les emboîtures nécessaires au raccordement des tubes cuivre recuit que l'on rencontre dans les installations sanitaires.This device, which can receive most of the tools currently available in specialized shops, allows for the sockets necessary for the connection of annealed copper tubes that are encountered in sanitary installations.

Claims (10)

1. Appareil destiné à élargir ou évaser les extrémités des tubes ou similaires par expansion des mâchoires d'un outil monté sur un corps (1) lequel solidaire d'un manche fixe (7) est conçu pour engager l'extrémité conique (8) du mandrin (2) entre les mâchoires de l'outil sous l'action d'un manche mobile (4) faisant office de levier de commande, caractérisé en ce que le manche mobile est articulé directement sur le mandrin par un axe (15) et est associé à un moyen de transmission de force (3) au corps de l'appareil, qui est décalé par rapport à l'axe du mandrin.1. Apparatus intended to widen or flare the ends of tubes or the like by expanding the jaws of a tool mounted on a body (1) which, integral with a fixed handle (7) is designed to engage the conical end (8) of the mandrel (2) between the jaws of the tool under the action of a movable handle (4) acting as a control lever, characterized in that the movable handle is articulated directly on the mandrel by an axis (15) and is associated with a force transmission means (3) to the body of the device, which is offset from the axis of the mandrel. 2. Appareil destiné à l'expansion des extrémités des tubes selon la revendication 1, caractérisé en ce que le moyen de transmission de force est constitué par une biellette (3) articulée sur le manche de manoeuvre (4) et sur le corps (2) de l'appareil.2. Apparatus for the expansion of the ends of the tubes according to claim 1, characterized in that the force transmission means is constituted by a link (3) articulated on the operating handle (4) and on the body (2 ) of the device. 3. Appareil, selon la revendication 2, caractérisé en ce que la biellette (3) qui pivote autour d'un axe (13) solidaire du corps (1) de l'appareil maintient le manche mobile dans le plan du manche fixe et lui confère un point d'appui sur le corps tel que le rapport de multiplication de l'effort fourni par l'opérateur augmente au fur et à mesure que ledit manche mobile se rapproche du manche fixe.3. Apparatus according to claim 2, characterized in that the link (3) which pivots about an axis (13) integral with the body (1) of the apparatus maintains the movable handle in the plane of the fixed handle and it provides a fulcrum on the body such that the multiplication ratio of the force provided by the operator increases as said movable handle approaches the fixed handle. 4. Appareil selon la revendication 2, caractérisé en ce que la biellette (3) comporte un évidement (16) lui conférant une forme cambrée telle qu'elle laisse libre un espace suffisant pour que la queue (6) du mandrin ne soit pas heurtée par ladite biellette lorsque le manche mobile est amené contre le manche fixe.4. Apparatus according to claim 2, characterized in that the link (3) has a recess (16) giving it an arched shape such that it leaves free sufficient space so that the tail (6) of the mandrel is not struck by said link when the movable handle is brought against the fixed handle. 5. Appareil selon les revendications précédentes, caractérisé en ce que le recul du mandrin (2) est limité par un épaulement (9) qui vient en butée au fond d'une chambre (10) prolongeant l'alésage du corps de l'appareil.5. Apparatus according to the preceding claims, characterized in that the recoil of the mandrel (2) is limited by a shoulder (9) which abuts at the bottom of a chamber (10) extending the bore of the body of the apparatus . 6. Appareil selon l'une des revendications 2 à 5, caractérisé en ce que les axes d'articulation (13, 14) de la biellette et l'axe (15) liant la queue du mandrin au manche mobile sont identiques.6. Apparatus according to one of claims 2 to 5, characterized in that the articulation axes (13, 14) of the link and the axis (15) connecting the tail of the mandrel to the movable handle are identical. 7. Appareil selon l'une des revendications 2 à 6, caractérisé an ce que le maintien du mobile dans le plan du manche fixe déjà assuré par la biellette est renforcé par l'insertion dans le mobile de la queue (6) du mandrin dont la forme méplate obtenue par double fraisage est ajustée à la largeur de la chape (5) qui termine ledit manche.7. Apparatus according to one of claims 2 to 6, characterized in that the maintenance of the mobile in the plane of the fixed handle already provided by the rod is reinforced by the insertion into the mobile of the tail (6) of the mandrel the flat shape obtained by double milling is adjusted to the width of the yoke (5) which ends said handle. 8. Appareil selon l'une des revendications 2 à 7, caractérisé en ce que la distance du centre de l'axe d'articulation (13) de la biellette sur le corps de l'axe (A) du mandrin est égale à celle séparant les centres des eux axes d'articulation (14), (15) du manche mobile.8. Apparatus according to one of claims 2 to 7, characterized in that the distance from the center of the axis of articulation (13) of the rod on the body of the axis (A) of the mandrel is equal to that separating the centers from them hinge axes (14), (15) of the movable handle. 9. Appareil selon l'une des revendications 2 à 8, caractérisé en ce que la distance séparant les centres des deux axes (13), (14) de la biellette est égale à 2, 5 fois celle séparant les centres des deux axes du manche mobile.9. Apparatus according to one of claims 2 to 8, characterized in that the distance separating the centers of the two axes (13), (14) of the rod is equal to 2.5 times that separating the centers of the two axes of the movable handle. 10. Appareil selon les revendications 2 à 9, caractérisé par une disjonction des articulations telle qu'au fur et à mesure que le manche mobile se rapproche du manche fixe, la longueur du bras de levier existant au niveau du bras mobile entre le centre d'articulation (14) de la biellette sur le bras mobile et le prolongement de l'axe (A) du mandrin (2) diminue progressivement jusqu'à être égale à 1/3 de la distance séparant le centre de l'axe (13) de l'axe (A) du mandrin, soit 4 mm environ lorsque la poignée (17) du manche mobile vient toucher celle (18) du manche fixe.10. Apparatus according to claims 2 to 9, characterized by a disjunction of the joints such that as the movable handle approaches the fixed handle, the length of the lever arm existing at the movable arm between the center d articulation (14) of the link on the movable arm and the extension of the axis (A) of the mandrel (2) gradually decreases until it is equal to 1/3 of the distance separating the center of the axis (13 ) of the axis (A) of the mandrel, that is to say approximately 4 mm when the handle (17) of the movable handle comes to touch that (18) of the fixed handle.
EP19900401241 1989-05-12 1990-05-10 Tube end enlarging or expanding tool Expired - Lifetime EP0397570B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8906448A FR2646792A1 (en) 1989-05-12 1989-05-12 APPARATUS FOR EXTENDING OR EVASING THE END OF TUBES
FR8906448 1989-05-12

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EP0397570A1 true EP0397570A1 (en) 1990-11-14
EP0397570B1 EP0397570B1 (en) 1994-07-27

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EP19900401241 Expired - Lifetime EP0397570B1 (en) 1989-05-12 1990-05-10 Tube end enlarging or expanding tool

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EP (1) EP0397570B1 (en)
DE (1) DE69010980T2 (en)
FR (1) FR2646792A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1160027A1 (en) * 2000-05-30 2001-12-05 Alphacan Expansion plier
US6672128B2 (en) 2002-06-06 2004-01-06 Rothenberger Werkeuge Aktiengesellschaft Hand tool in pliers form for expanding hollow bodies
US8517715B2 (en) 2010-04-06 2013-08-27 Milwaukee Electric Tool Corporation PEX expanding tool
CN106142527A (en) * 2016-07-27 2016-11-23 广东联塑科技实业有限公司 A kind of tube expander shown and limit expander amount
US9862137B2 (en) 2015-04-20 2018-01-09 Milwaukee Electric Tool Corporation PEX expanding tool
US9914260B2 (en) 2014-06-20 2018-03-13 Milwaukee Electric Tool Corporation PEX expanding tool
US10000007B2 (en) 2015-06-10 2018-06-19 Milwaukee Electric Tool Corporation PEX expanding tool
US11596999B2 (en) 2019-02-20 2023-03-07 Milwaukee Electric Tool Corporation PEX expansion tool
US11633775B2 (en) 2019-02-20 2023-04-25 Milwaukee Electric Tool Corporation PEX expansion tool
US11779990B2 (en) 2021-04-09 2023-10-10 Milwaukee Electric Tool Corporation Expansion tool
US11819902B2 (en) 2020-11-27 2023-11-21 Milwaukee Electric Tool Corporation Expansion tool

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Publication number Priority date Publication date Assignee Title
WO1981000364A1 (en) * 1979-07-30 1981-02-19 Rast Patent Mfg Ltd Tube expanding tool
EP0252868A2 (en) * 1986-07-07 1988-01-13 Emerson Electric Co. Tube expanding tool
EP0309699A2 (en) * 1987-09-28 1989-04-05 Rothenberger Werkzeuge-Maschinen Gmbh Enlarging device for hollow work pieces

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981000364A1 (en) * 1979-07-30 1981-02-19 Rast Patent Mfg Ltd Tube expanding tool
EP0252868A2 (en) * 1986-07-07 1988-01-13 Emerson Electric Co. Tube expanding tool
EP0309699A2 (en) * 1987-09-28 1989-04-05 Rothenberger Werkzeuge-Maschinen Gmbh Enlarging device for hollow work pieces

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2809651A1 (en) * 2000-05-30 2001-12-07 Alphacan Sa SOCKET PLIERS
EP1160027A1 (en) * 2000-05-30 2001-12-05 Alphacan Expansion plier
US6672128B2 (en) 2002-06-06 2004-01-06 Rothenberger Werkeuge Aktiengesellschaft Hand tool in pliers form for expanding hollow bodies
US8517715B2 (en) 2010-04-06 2013-08-27 Milwaukee Electric Tool Corporation PEX expanding tool
US8763439B2 (en) 2010-04-06 2014-07-01 Milwaukee Electric Tool Corporation PEX expanding tool
US9914260B2 (en) 2014-06-20 2018-03-13 Milwaukee Electric Tool Corporation PEX expanding tool
US9993961B2 (en) 2015-04-20 2018-06-12 Milwaukee Electric Tool Corporation PEX expanding tool
US9862137B2 (en) 2015-04-20 2018-01-09 Milwaukee Electric Tool Corporation PEX expanding tool
US10926451B2 (en) 2015-04-20 2021-02-23 Milwaukee Electric Tool Corporation PEX expanding tool
US11648727B2 (en) 2015-04-20 2023-05-16 Milwaukee Electric Tool Corporation PEX expanding tool
US12023849B2 (en) 2015-04-20 2024-07-02 Milwaukee Electric Tool Corporation PEX expanding tool
US10000007B2 (en) 2015-06-10 2018-06-19 Milwaukee Electric Tool Corporation PEX expanding tool
US10946576B2 (en) 2015-06-10 2021-03-16 Milwaukee Electric Tool Corporation PEX expanding tool
CN106142527A (en) * 2016-07-27 2016-11-23 广东联塑科技实业有限公司 A kind of tube expander shown and limit expander amount
CN106142527B (en) * 2016-07-27 2019-02-15 广东联塑科技实业有限公司 A kind of tube expander shown and limit expander amount
US11596999B2 (en) 2019-02-20 2023-03-07 Milwaukee Electric Tool Corporation PEX expansion tool
US11633775B2 (en) 2019-02-20 2023-04-25 Milwaukee Electric Tool Corporation PEX expansion tool
US11819902B2 (en) 2020-11-27 2023-11-21 Milwaukee Electric Tool Corporation Expansion tool
US11779990B2 (en) 2021-04-09 2023-10-10 Milwaukee Electric Tool Corporation Expansion tool

Also Published As

Publication number Publication date
EP0397570B1 (en) 1994-07-27
DE69010980T2 (en) 1995-02-23
FR2646792B1 (en) 1995-02-24
FR2646792A1 (en) 1990-11-16
DE69010980D1 (en) 1994-09-01

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