EP0343191B1 - Ensemble de pieces de retenue efficace sur clavette de pointe a travailler la terre - Google Patents

Ensemble de pieces de retenue efficace sur clavette de pointe a travailler la terre Download PDF

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Publication number
EP0343191B1
EP0343191B1 EP19880902349 EP88902349A EP0343191B1 EP 0343191 B1 EP0343191 B1 EP 0343191B1 EP 19880902349 EP19880902349 EP 19880902349 EP 88902349 A EP88902349 A EP 88902349A EP 0343191 B1 EP0343191 B1 EP 0343191B1
Authority
EP
European Patent Office
Prior art keywords
pin
washer
groove
ring
retaining
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.)
Expired - Lifetime
Application number
EP19880902349
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German (de)
English (en)
Other versions
EP0343191A1 (fr
Inventor
Mark Steven Diekevers
Jerry Dale Fidler
Brian D. Jensen
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.)
Caterpillar Inc
Original Assignee
Caterpillar Inc
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 Caterpillar Inc filed Critical Caterpillar Inc
Publication of EP0343191A1 publication Critical patent/EP0343191A1/fr
Application granted granted Critical
Publication of EP0343191B1 publication Critical patent/EP0343191B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2816—Mountings therefor
    • E02F9/2833—Retaining means, e.g. pins
    • E02F9/2841—Retaining means, e.g. pins resilient

Definitions

  • This invention relates generally to a pin retainer assembly for securing an earthworking tip to an adapter on an earthworking device and more particularly to a keeper means for positively securing the pin in the apertures in the tip and the bore in the nose of the adapter.
  • Prior art retaining pins for securing an earthworking tip on its adapter have not been totally successful especially when used in combination with impact rippers.
  • the retaining pins are subjected to extreme vibration resulting in breakage of the pins or the retaining mechanism becoming loose causing loss of the pin and the tip.
  • U.S. Patent 3,624,827 issued to Richard K. Liess et al on November 30, 1971 discloses a retaining pin having a friction ring disposed in a deep, wide, central groove of the pin. The pin is retained in a bore defined by the adapter nose solely by friction between the ring and the bore. Although this type of pin has been successful in normal ripper and bucket tip retaining applications, the central groove materially reduces the strength of the pin and subjects it to early failure in extremely severe applications. In addition, the pin can vibrate out of the bore since it is not positively retained.
  • U.S. Patent No. 3,952,433 issued to Lloyd K. Heinold, et al on April 27, 1976 and U.S. Patent No. 3,990,162 issued to Lloyd K. Heinold, et al on November 9, 1976 disclose spring clips that straddle diametrially opposite sides of the retaining pin in expanded friction engagement.
  • the clips are substantially encapsulated by an elastomeric material which aids in maintaining the spring clips in frictional engagement with the pins.
  • the spring clips only partially engage the pins and the pins are easily removed by the spreading of the spring clips.
  • an improved earthworking device so constructed that the earthworking tip is retained on the nose of the adapter by a pin that is positively retained in aligned apertures in the earthworking tip and the bore of the adapter.
  • the retaining pin is positively secured by a keeper means that is simple and economical in construction while maintaining the pin against outward axial movement during operation of the earthworking device.
  • the present invention is directed to overcoming one or more of the problems as set forth above.
  • GB-A-1 518 824 discloses an earthworking device according to the preamble of claim 1.
  • a retaining pin and a keeper means adapted for use in an earthworking device as set forth in the characterising portion of claim 1 is provided.
  • Preferred embodiments of the invention are disclosed in the dependent claims.
  • a pin retainer assembly includes a pin having an outer peripheral surface with an annular groove defined in the outer peripheral surface thereof, a washer slideably disposed on the pin and having an annular groove defined in an inner peripheral surface, and a resilent retaining ring which when assembled is disposed in locking engagement within the groove on the pin and the groove in the washer.
  • the retaining ring has a cross section with a predetermined radial thickness and one of the grooves in the pin and washer has a depth equal to or greater than the predetermined radial thickness of the retaining ring.
  • an earthworking device in another aspect of the present invention, includes an adapter having a nose defining a transverse bore and a earthworking tip telescopically mounted on the nose and having a pair of spaced apart side walls and a pair of axially aligned holes in the sidewalls.
  • the bore in the nose of the adapter and the holes in the sidewalls of the tip are substantially axially aligned.
  • a recess is formed in the nose or the tip and is in axial alignment with the bore and the holes.
  • a retaining pin having a groove disposed adjacent one end is slidably disposed in the aligned bore and the holes for retaining the tip on the adapter.
  • a keeper means for securing the pin in the bore is located in the recess and captured between the adapter and a sidewall of the tip and includes a metallic washer having an inside surface defining a bore and a groove opening into the bore.
  • a resilient retaining ring having a cross-section of a predetermined radial thickness is provided and is captured in one of the grooves in the pin and the washer and adapted to permit slidable insertion of the pin in the bores and the holes for locking engagement of the retaining ring with the other of the grooves.
  • One of the grooves in the pin and the washer has a depth equal to or greater than the predetermined radial thickness of the retaining ring and the other of the grooves has a depth and configuration sufficient to prevent camming of the ring out of the groove.
  • the retaining ring and washer being of a configuration sufficient to permit shearing of the retaining ring or fracture of the washer during disassembly.
  • an earthworking device 10 comprising a support member or adapter 12 having a tip 14 detachably mounted by a pin retainer assembly 15 on a forward end or nose 16 thereof.
  • the pin retainer assembly 15 includes a cylindrical pin 17 which has an outer peripheral surface 20 and an annular groove 21 defined therein. A pair of beveled surfaces 18 and 19 are provided at the intersection of the outer peripheral surface 20 with the ends of the pin 17.
  • the nose 16, preferably of wedge shape, defines a transverse bore 22 and a pair of forwardly converging lateral sidewalls 24 and 26. It is noted that in some adapters 12, the sidewalls 24 and 26 may not be forwardly converging but be substantially parallel.
  • a recess 28 having an end wall 29 is formed in the lateral sidewall 24 of the nose 16 and in concentric relationship with the bore 22.
  • a wedge-shaped socket 30 is formed in the tip 14 to accommodate the like-shaped nose 16 of the adapter 12.
  • the nose preferably terminates at its apex defined by a surface 32 adapted to at least partially abut a surface 34 formed at the apex of recess 30 in the tip 14.
  • the tip 14 has a pair of forwardly converging spaced sidewalls 36 and 38 and a pair of laterally aligned holes 39 and 40 defined by peripheral surfaces 41 and 42.
  • the sidewalls 36 and 38 are normally designed to conform generally to the sidewalls 24 and 26 of the nose 16.
  • the holes 39 and 40 straddle bore 22 in the nose 16 and are in substantially axially alignment therewith.
  • the pin retainer assembly 15 also includes a keeper means 44 mounted in the recess 28 formed in the lateral wall 24 of the nose 16 for securing the pin 17 in the bore 22 of nose 16. It is recognized that the recess 28 could equally be formed in lateral sidewall 26 of the nose 16 or in either of the sidewalls 36 or 38 of the tip without departing from the subject invention.
  • the keeper means 44 includes a washer 46 having an inside surface 47 defining a bore 48 with a radial annular groove 50 defined in the washer and opening into the bore.
  • the washer 46 is preferably made of metallic material or any other suitable material.
  • the washer 46 further has a flat inner side surface 52 adjacent the end wall 29 of the counterbore 28 and a frusto-conical outer side surface 54 adjacent the sidewall 36 of the tip 14. It should be recognized that a similar outer frusto-conical surface could be on the opposite side of the washer 46 without departing from the essence of the subject invention.
  • the groove 50 of the washer 46 has a pair of generally parallel sidewalls 56 and 58 and a bottom surface 60 spaced from the bore 48 defining a predetermined depth A for the groove.
  • the groove 21 in the pin 17 has a pair of generally parallel sidewalls 62 and 64 and a bottom surface 66 spaced from the outer peripheral surface 20 of the pin 17 defining a predetermined depth B for the groove.
  • the keeper means 44 also includes a metallic split resilient retaining ring 68.
  • the retaining ring 68 has a cross-section that is generally rectangular with a pair of generally parallel sidewalls 70 and 72 defining a predetermined width C and a pair of generally parallel inner and outer surfaces 74 and 76 defining a predetermined radial thickness D.
  • the ring 68 is slidably captured in the groove 50 of the washer 46.
  • the ring 68 may be composed of a conventional spring steel or like material which exhibits the desired resiliency, hardness and spring back capabilities required for pin retention purposes.
  • the pin 17 in the assembled position is slidably disposed within the bore 22 of the nose 16, the bore 48 of the washer 46 and extends substantially through the holes 39 and 40 of the sidewalls 36 and 38 of the tip 14.
  • the ring 68 is disposed in locking engagement with the groove 21 of the pin 17 and the groove 50 in the washer 46.
  • the depth A of groove 50 in the washer 46 has depth A is equal to or greater than the predetermined radial thickness D of the ring 68.
  • the predetermined depth B of the groove 21 in the pin 17 is generally equal to one-half of the predetermined radial thickness D of the ring 68.
  • FIG. 5 an alternate embodiment of the present invention is illustrated and includes a split resilient retaining ring 78 having a cross-section that is generally circular with a predetermined radial thickness E.
  • the ring 78 is slidably captured in the groove 50 of the washer 46.
  • a bottom surface 80 of the groove 50, spaced from the bore 48, has a profile generally corresponding to the ciruclar cross-section of the ring 78 and defines a depth F for the groove.
  • the groove 21 in the pin 17 has a root profile 82 generally corresponding to the circular cross-section of the ring 78 and defines a predetermined depth G for the groove.
  • the ring 78 is disposed in locking engagement with the groove 21 of the pin 17 and the groove 50 in the washer 46.
  • bottom surface 80 of groove 50 and the profile 82 of groove 21 in pin 17 need not correspond exactly to the circular cross-section of the ring 78 and may in fact be like that shown in Fig. 4.
  • the depth F of groove 50 in the washer 46 is equal to or greater than the predetermined radial thickness E of ring 78 and the predetermined depth G of the groove 21 in the pin 17 is generally equal to one-half of the predetermined radial thickness E of the ring 78.
  • the groove 21 in the pin 17 has a depth H preferably equal to or greater than the predetermined radial thickness D of the ring 68.
  • the ring 68 is slidably captured in the groove 21 of the pin 17.
  • the radial annular groove 50 in washer 46 preferably has a depth J generally equal to one-half of the radial thickness D of the ring 68.
  • a pair of beveled surfaces 84 and 86 are provided at the intersection of the bore 48 and the side surfaces 52 and 54 of the washer 46. The beveled surfaces 84 and 86 are dimensioned to provide a camming function to compress ring 68 into groove 21 during assembly.
  • split resilient ring 78 having a cross-section that is generally circular could be slidably captured in the groove 21.
  • the earthworking device 10 of the present invention is particularly adaptable for positive retention of earthworking tips or teeth detachably mounted on support adapters and may be equally useful for the retention of tips used on trenchers or on the cutting edge of a loader bucket. Because the tips and the pins are subjected to extreme bending, twisting and vibration it is extremely difficult to providing positive pin retention while still allowing periodic replacement.
  • the keeper means 44 is initially placed in recess 28 and the tip 14 is telescopically mounted on the nose 16 of the adapter 12. This captures keeper means 44 between the end wall 29 of the recess 28 and the sidewall 36 of the tip 24.
  • the flat inner surface 52 of the washer 46 is positioned adjacent the end wall 29 of the recess with conical outer side surface 54 adjacent the sidewall 36 of the tip.
  • Pin 17 is then driven manually, by a sledge hammer or the like, through the aligned holes 39 and 40 in the tip 14, the bore 22 in the nose 16 of adapter 12 and the bore 48 in the washer 46 of the keeper means 44.
  • the ring 68 has a cross-section that is generally rectangular with generally paralled sidewalls 70 and 72 that engage the generally parallel sidewalls 56 and 58 of the groove 50 in the washer 46 and the generally parallel sidewalls 62 and 64 of the groove 21 in the pin 17.
  • approximately one-half of the predetermined thickness D of the ring 68 is located in the groove 21 of the pin 17 and approximately one-half is located in the groove 50 of the washer 56. It is recognized that the groove 21 in the pin 17 need only have a depth B sufficient to prevent camming of the ring 68 out of the groove 21.
  • any axial force on the end of the pin 17, during operation of the earthworking device 10, trying to dislodge the pin 17 from the bore 48 of the captured washer 46 is resisted by the ring 68 overlapping the grooves 21 and 50 with the maximum section thickness C of the ring 68 being in shear.
  • a force In order to disassembly the pin 17 from the bore 22 of the nose 16 for periodic replacement of the tip 14, a force must be applied on the end of the pin by a sledge hammer or the like sufficient to physically shear the ring 68 at the interface of the grooves 21 and 50 or alternately to cause fracture of the washer 46. It is recognized that the amount of force to shear the ring 46 or the fracture of the washer 46 can be changed or controlled by changing either the cross-section of the ring or washer that is in shear, the type of material and/or the heat treatment of the elements. In one working example, the force necessary to cause the retaining ring 68 to shear is in the range of 143 - 257 kN (32,200 - 57,700 lbs.). This being based on having a section thickness C in shear of approximately 3.0 mm (.118 inches).
  • Fig. 5 discloses a split resilient retaining ring 78 having a generally circular cross-section with approximately one-half of the predetermined radial thickness E of the ring located in the groove 50 of he washer 46 and approximately one-half located in the groove 21 of the pin 17 to prevent camming of the ring 78 out of the grooves 21 and 50.
  • any axial force on the end of the pin 17 trying to dislodge the pin from the bore 48 of washer 46 is resisted by the ring 78 overlapping the grooves 21 and 50 places the maximum radial section thickness E of the ring in shear.
  • the ring 68 is slidably captured in the groove 21 of the pin 17.
  • the depth H of the groove 21 is equal to or greater than the predetermined radial thickness D of the ring 68 and the depth J of the groove 50 in the washer 46 is equal to one-half the radial thickness D of the ring 68.
  • approximately one-half of the predetermined thickness D of the ring is located in the groove 21 of the pin 17 and approximately one-half is located in the groove 50 of the washer 46.
  • the groove 50 in the washer 46 need only have a depth H sufficient to prevent camming of the ring 68 out of the groove 50.
  • the subject invention provides a means for postively retaining the earthworking tip 14 on the adapter 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Holders For Apparel And Elements Relating To Apparel (AREA)
  • Catching Or Destruction (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

Dispositif de retenue d'une clavette comportant un ensemble de pièces pour maintenir sur leur fixation les pointes à travailler la terre. Il est extrêmement important, du point de vue opérationnel comme du point de vue économique, de bien maintenir sur leur fixation les pointes à travailler la terre au moyen de leurs clavettes de retenue pendant toute la durée du travail. En effet, quand ces pointes sont perdues, il faut les remplacer ou les réparer, ce qui non seulement fait perdre du temps mais se répercute sur la production. S'il faut, certes, bien maintenir ces pointes en place, celles-ci doivent cependant pouvoir être rapidement enlevées en vue de leur remplacement. Les pièces de retenue (44) de la clavette (17) viennent s'insérer dans un évidement (28) situé entre un bec (16) de la pièce de fixation (12) et une paroi latérale (36) de la pointe (14) et comportent une rondelle (46) glissée sur la clavette (17) et une bague de retenue élastique (68, 78), d'une épaisseur radiale prédéterminée, s'engageant dans une rainure (21) disposée sur la clavette (17) ainsi que dans une rainure de la rondelle (46) pour provoquer un verrouillage. L'une des rainures (21, 50) de la clavette (17) et de la rondelle ont une profondeur égale ou supérieure à l'épaisseur radiale prédéterminée de la bague de retenue (68, 78) et l'autre rainure (21, 50) a une profondeur suffisante pour empêcher que la bague (68, 78) fasse saillie hors de la rainure (21, 50) et que la largeur de la section transversale de la bague (68, 78), exposée au cisaillement, soit maximale. Pour enlever la clavette (18), on doit cisailler la bague (68, 78) on casser la rondelle (46).

Claims (10)

  1. Goupille de retenue (17) et moyen de maintien (44) conçus pour être utilisés dans un dispositif de terrassement (10) comportant un nez (16) et une pointe (14) montée de façon télescopique sur le nez (16), le nez ayant un orifice transversal (22) et des parois latérales convergeant latéralement, la pointe (14) définissant une cavité d'accouplement comportant des parois latérales convergentes espacées latéralement, dans lesquelles sont ménagés deux trous alignés l'un avec l'autre et alignés axialement avec l'orifice (22), ainsi qu'un évidement (28) formé dans le nez ou dans la pointe et aligné axialement avec l'orifice (22) et les trous, la goupille de retenue et le moyen de maintion (44) comprenant: la goupille de retenue (17) dans la surface périphérique externe de laquelle est définie une rainure annulaire (21); et le moyen de maintien comportant une rondelle (46) et un anneau de retenue élastique (68, 78), le moyen de maintien (44), à l'état assemblé, étant disposé dans l'évidement et la goupille (17) étant disposée dans l'orifice (22) et les trous (39, 40) alignés afin de retenir la pointe (17) sur le nez (16), la rondelle (46) étant montée à coulissement sur la goupille (17) et l'anneau (68, 78) ayant une section transversale d'épaisseur radiale prédéterminée, caractérisés en ce que la rondelle (46) présente une surface périphérique interne (47) dans laquelle est définie une rainure annulaire (50), la rondelle, réalisée en métal, ayant une surface latérale tronconique (54) et l'anneau (68, 78) étant disposé dans la rainure de la goupille (17) et dans la rainure de la rondelle en relation de verrouillage, l'anneau (68, 78), en service, étant apte à agir conjointement avec les rainures de la goupille (17) et de la rondelle (46) pour empêcher que la goupille ne se désengage de la rondelle sans application, sur la goupille, d'une force externe suffisante pour cisailler l'anneau ou fracturer la rondelle (46), l'un des côtés de la rondelle étant adapté pour coopérer avec l'une des parois latérales du nez (16) et avec la pointe afin de concentrer efficacement la force externe à proximité de l'interface des rainures.
  2. Goupille de retenue (17) et moyen de maintien (44) selon la revendication 1, dans lesquels ladite section transversale de l'anneau de retenue (68) est d'une manière générale rectangulaire.
  3. Goupille de retenue (17) et moyen de maintien (44) selon la revendication 1 ou 2, dans lesquels l'une des rainures (21, 50) de la goupille (17) et de la rondelle (46) a une profondeur égale ou supérieure à l'épaisseur radiale prédéterminée de l'anneau de retenue (68, 78).
  4. Goupille de retenue (17) et moyen de maintien (44) selon la revendication 3, dans lesquels l'autre des rainures (21, 50) a une profondeur égale à la moitié de l'épaisseur radiale prédéterminée de l'anneau de retenue (68, 78).
  5. Goupille de retenue (17) et moyen de maintien (44) selon l'une quelconque des revendications 1 à 4, dans lesquels ledit anneau de retenue (68, 78) a une section transversale circulaire.
  6. Goupille de retenue (17) et moyen de maintien (44) selon la revendication 1, dans lesquels la profondeur de la rainure (21) de la goupille (17) est d'une manière générale égale à la moitié de l'épaisseur radiale prédéterminée de l'anneau de retenue (68, 78), et la rainure (50) de la rondelle (46) a une profondeur égale ou supérieure à l'épaisseur radiale prédéterminée de l'anneau de retenue (68, 78).
  7. Goupille de retenue (17) et moyen de maintien (44) selon l'une quelconque des revendications 1 à 6, dans lesquels l'anneau de retenue élastique (68, 78) est fendu et circulaire.
  8. Dispositif de terrassement (10) selon l'une quelconque des revendications 1 à 4 et 6 et 7, dans lequel la rainure (50) de la rondelle (46) a deux parois latérales parallèles (56, 58), la rainure (21) de la goupille (17) a deux parois latérales parallèles (62, 64) et l'anneau de retenue (68, 78) a deux parois latérales parallèles (70, 72) en contact avec les parois latérales de la rainure (21) de la goupille (17) et de la rainure (50) de la rondelle (46).
  9. Dispositif de terrassement (10) selon l'une quelconque des revendications précédentes, dans lequel l'évidement (28) est formé dans le nez (16).
  10. Dispositif de terrassement (10) comprenant une goupille de retenue (17) et un moyen de maintien (44) selon l'une quelconque des revendications précédentes.
EP19880902349 1987-01-20 1987-11-30 Ensemble de pieces de retenue efficace sur clavette de pointe a travailler la terre Expired - Lifetime EP0343191B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US451587A 1987-01-20 1987-01-20
US451687A 1987-01-20 1987-01-20
US4515 1995-09-29
US4516 1995-09-29

Publications (2)

Publication Number Publication Date
EP0343191A1 EP0343191A1 (fr) 1989-11-29
EP0343191B1 true EP0343191B1 (fr) 1993-08-04

Family

ID=26673108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880902349 Expired - Lifetime EP0343191B1 (fr) 1987-01-20 1987-11-30 Ensemble de pieces de retenue efficace sur clavette de pointe a travailler la terre

Country Status (7)

Country Link
EP (1) EP0343191B1 (fr)
JP (1) JP2614910B2 (fr)
AU (1) AU605268B2 (fr)
CA (1) CA1283939C (fr)
DE (1) DE3786929T2 (fr)
ES (1) ES2006269A6 (fr)
WO (1) WO1988005483A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015036936A1 (fr) * 2013-09-12 2015-03-19 Rialca Due Di Chiolerio Paolo Giovanni Dispositif de fixation de dents à des adaptateurs de dents d'un engin de terrassement par le biais de tiges

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU694806B2 (en) * 1993-12-23 1998-07-30 Australian Soil Care Systems Pty. Ltd. Overload protection mechanism
JP4771623B2 (ja) * 2001-07-17 2011-09-14 株式会社小松製作所 掘削用バケットのツース固定構造
US9062436B2 (en) 2011-10-07 2015-06-23 Caterpillar Inc. Implement tooth assembly with tip and adapter
US8943717B2 (en) 2011-10-08 2015-02-03 Caterpillar Inc. Implement tooth assembly with tip and adapter
US9057177B2 (en) 2011-10-08 2015-06-16 Caterpillar Inc. Implement tooth assembly with tip and adapter
US8943716B2 (en) 2011-10-10 2015-02-03 Caterpillar Inc. Implement tooth assembly with tip and adapter
US9670648B2 (en) 2015-08-10 2017-06-06 Caterpillar Inc. Replaceable tip systems for a tine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856359A (en) * 1971-09-20 1974-12-24 Cincinnati Mine Machinery Co Anti-coring device for use with bit mounting means on mining, earth working and digging machines
BR7502137A (pt) * 1974-08-05 1976-08-03 Caterpillar Tractor Co Dispositivo de penetracao no terreno e meio de retencao
US4096653A (en) * 1974-10-31 1978-06-27 Caterpillar Tractor Co. Cartridge retaining means for earthworking tips
FR2390618B1 (fr) * 1977-05-12 1985-11-29 Lamouric Pol Dispositif pour le maintien a rotation d'un outil dans un porte-outil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015036936A1 (fr) * 2013-09-12 2015-03-19 Rialca Due Di Chiolerio Paolo Giovanni Dispositif de fixation de dents à des adaptateurs de dents d'un engin de terrassement par le biais de tiges

Also Published As

Publication number Publication date
JP2614910B2 (ja) 1997-05-28
WO1988005483A1 (fr) 1988-07-28
CA1283939C (fr) 1991-05-07
DE3786929T2 (de) 1994-03-10
DE3786929D1 (de) 1993-09-09
ES2006269A6 (es) 1989-04-16
AU1396488A (en) 1988-08-10
EP0343191A1 (fr) 1989-11-29
AU605268B2 (en) 1991-01-10
JPH02502033A (ja) 1990-07-05

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