EP0180831A1 - Pince à tuyaux - Google Patents

Pince à tuyaux Download PDF

Info

Publication number
EP0180831A1
EP0180831A1 EP85113244A EP85113244A EP0180831A1 EP 0180831 A1 EP0180831 A1 EP 0180831A1 EP 85113244 A EP85113244 A EP 85113244A EP 85113244 A EP85113244 A EP 85113244A EP 0180831 A1 EP0180831 A1 EP 0180831A1
Authority
EP
European Patent Office
Prior art keywords
handle
drive part
driving gear
pipe wrench
arms
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.)
Granted
Application number
EP85113244A
Other languages
German (de)
English (en)
Other versions
EP0180831B1 (fr
Inventor
Chao-Yang Chen
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
Priority to AT85113244T priority Critical patent/ATE43086T1/de
Publication of EP0180831A1 publication Critical patent/EP0180831A1/fr
Application granted granted Critical
Publication of EP0180831B1 publication Critical patent/EP0180831B1/fr
Expired legal-status Critical Current

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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
    • B25B13/00—Spanners; Wrenches
    • B25B13/10—Spanners; Wrenches with adjustable jaws
    • B25B13/12—Spanners; Wrenches with adjustable jaws the jaws being slidable
    • B25B13/14—Spanners; Wrenches with adjustable jaws the jaws being slidable by rack and pinion, worm or gear

Definitions

  • the present invention relates to an improved adjustable pipe wrench;
  • the invention relates to such pipe wrench, which has an improved drive mechanism with increased strength and resilience.
  • the main object of the present invention is to provide a pipe wrench that has a permanent drive mechanism.
  • Another object of this invention is to provide a pipe wrench, the handle of which can be operated together with the drive member.
  • a still further object of this invention is to provide a pipe wrench which has a simple construction, so that the production of this pipe wrench is possible at significantly lower production costs than with comparable products.
  • this invention provides a pipe wrench that has a body with a fixed jaw. There is also a handle with two parallel, spaced arms that are rotatable with respect to the body.
  • a rack is slidably disposed within the body and carries a movable jaw.
  • Inside the body is a drive part that meshes with the rack.
  • a hole is cut out in each of the two arms so that the two holes are axially aligned with one another.
  • the inner circumference of each hole is designed as a ring gear with inner teeth.
  • the drive part is arranged concentrically to these holes or toothed rings and bridges the two holes.
  • a locking member is attached to the drive member so that it can engage the ring gears to hold the drive member and only allow the drive member to rotate in one direction.
  • the locking member has two locking surfaces.
  • An actuator cooperating with the locking member can be operated so that either one or the other locking surface of the locking member engages the sprocket comes to prevent the rotation of the drive member in one direction.
  • 1 to 3 include a fixed jaw 35 which can be fastened to a body 30 by means of a screw 36.
  • a slidable jaw 42 is formed at the front end of a rack 40, which in turn is slidably held within a slot 31 in the body 30 so that the distance between the fixed jaw 35 and the movable jaw 42 can be adjusted.
  • In the wall of the Body 30 has an opening 32 cut out, which in turn is connected to slot 31, so that teeth 41 of rack 40 protrude into opening 32.
  • the handle 70 used to actuate the pipe wrench has two arms 71 and 71 'which are arranged parallel and at a distance from one another. On each arm 71, 71 'there is a hole 72, 72 1 , the inner circumference of which is designed as a ring gear 721, 721'.
  • the handle 70 is arranged to be pivotable with respect to the body 30, the two arms 71, 71 'being located adjacent to the outer wall of the body 30, and the holes 72, 72' being axially aligned with the opening 32.
  • a drive part 50 has a length in the axial direction which essentially corresponds to the distance between the two arms 71, 71 'of the handle 70.
  • This drive part 50 is inserted in the axial direction into the opening 32 in the body 30, a slot 56 extending in the axial direction over the entire length of the drive part 50, so that the teeth 41 of the rack 40 mesh with the drive part 50 after the drive part 50 is inserted into the body 30 because the teeth 41 protrude into the opening 32.
  • the drive member 50 meshes with the teeth 41 of the rack 40 so that when the rack 40 together with the body 30 is rotated clockwise or counterclockwise with respect to the handle 70, that formed between the movable jaw 42 and the fixed jaw 35 Opening is changed in width in order to accommodate workpieces with different dimensions.
  • a certain angle of rotation of the same components is given because the radius of curvature of the sector-shaped pinions 61, 61 'is larger than the radius of the holes 72, 72', so that only one side of the sector-shaped pinions 61, 61 'with the inner teeth of the adjacent ring gear 721, 721 'combs while the other side of the pinion does not engage these teeth.
  • a selector or control lever 63 is provided with a button 631 and fastened within an axial bore 51 of the drive part 50.
  • the spring-actuated pins 65, 65' Under the spring force of the springs 64, 64 ', the spring-actuated pins 65, 65' are pressed against the curved bottom surface 613 of the sector-shaped pinions 61, 61 ', so that these pinions 61, 61' are in engagement with the ring gears 721, 721 ' being held.
  • the operator can turn the knob 631 to the right or to the left, whereupon either the teeth 611 on the right side or the teeth 612 on the left side of the pinion 61, 611 come into engagement with the ring gears 721, 721 ' , whereby the rotation of the handle 70 with respect to the drive part 50 can take place either counterclockwise or in the clockwise direction.
  • cover plates 75 and washers 74 are provided, which are fastened to both sides of the body 30 by means of a screw 76, which also causes a lateral displacement of the drive part 50 is prevented in the transverse direction.
  • a screw 76 can be screwed into an axial bore 632, which is recessed in the shaft of the control lever 63, in order to thereby fasten the drive part 50 within the body 30.
  • the jaws 35, 42 are opened or closed depending on the direction of rotation.
  • FIG 3 illustrates a working position, wherein the teeth 611 located on the left side of the sector-shaped pinions 61, 61 'are in engagement with the adjacent ring gear 721, 721' of the handle, and an object (not shown) whose diameter is smaller than the distance between the fixed jaw 35 and the movable jaw 42, is inserted into the opening formed between these two jaws 35 and 42.
  • the drive member 50 can also be turned clockwise, whereby the movable jaw 42 is displaced toward the fixed jaw 35 by displacement of the rack 40 until it hits the object.
  • the handle 70 is now rotated in the clockwise direction, the object is firmly clamped between the fixed jaw 35 and the movable jaw 42 and clamped when a torque is exerted on the object by means of the handle 70 in a clockwise direction. If, in the same working position, the grip between the object and the jaws 35, 42 is to be loosened, the operator can turn the control lever 63 so that the teeth 612 arranged on the right side of the sector-shaped pinions 61, 61 'engage with the adjacent ring gear 721, 721 '. Thereupon, the handle 70 is secured against rotation counterclockwise to the body 30 so that the object can now be rotated counterclockwise by rotating the handle 70.
  • the spring-actuated pins 65, 65 ' are located in two bores 57, 57' which are recessed to the left of the central axis of the drive part 50; these spring-actuated pins 65, 65 'bring the teeth 612, 612' located on the left side of the sector-shaped pinions 61, 61 'into engagement with the internal teeth of the adjacent toothed rings 721, 721'. If there is resistance between the movable jaw 42 and the fixed jaw 35, for example when an object is gripped by these two jaws 35, 42, these sector-shaped pinions 61, 61 'prevent the body 30 from rotating clockwise.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Pens And Brushes (AREA)
  • Drilling Tools (AREA)
  • Surgical Instruments (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Supports For Pipes And Cables (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Valve Device For Special Equipments (AREA)
  • Processing Of Terminals (AREA)
EP85113244A 1984-11-02 1985-10-18 Pince à tuyaux Expired EP0180831B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85113244T ATE43086T1 (de) 1984-11-02 1985-10-18 Rohrzange.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US667538 1984-11-02
US06/667,538 US4561330A (en) 1984-11-02 1984-11-02 Pipe wrench

Publications (2)

Publication Number Publication Date
EP0180831A1 true EP0180831A1 (fr) 1986-05-14
EP0180831B1 EP0180831B1 (fr) 1989-05-17

Family

ID=24678620

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113244A Expired EP0180831B1 (fr) 1984-11-02 1985-10-18 Pince à tuyaux

Country Status (9)

Country Link
US (1) US4561330A (fr)
EP (1) EP0180831B1 (fr)
AT (1) ATE43086T1 (fr)
AU (1) AU572770B2 (fr)
CA (1) CA1240539A (fr)
DE (2) DE8514675U1 (fr)
ES (1) ES296158Y (fr)
MX (1) MX161491A (fr)
NZ (1) NZ214030A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0385437A2 (fr) * 1989-02-28 1990-09-05 Clark J. Lee Serre-tubes réversible

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4766785A (en) * 1986-09-29 1988-08-30 Chen Hsi P Pipe clamp
US4942790A (en) * 1989-09-26 1990-07-24 Wang Bor J Pipe wrench
US6675679B2 (en) * 2001-07-12 2004-01-13 Dj Technologies, Inc. Internal gripping pipe wrench
US6834569B2 (en) * 2002-08-12 2004-12-28 Ching-Shu Wang Crescent wrench
US7024972B2 (en) * 2003-05-27 2006-04-11 Wj Technologies, Inc. Tool for removing and tightening screw-on drains
US8464615B2 (en) * 2010-03-29 2013-06-18 National Oilwell Varco, L.P. Safety pipe wrench
US20160176025A1 (en) * 2014-12-18 2016-06-23 Troy Houston Pipe wrench having changeable engaging surface

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR398733A (fr) * 1909-01-23 1909-06-12 Born Geb Clef à écrous à ouverture réglable
US2765691A (en) * 1954-12-03 1956-10-09 Orville S Meredith Claw operated, slidable outer jaw wrench
US4147076A (en) * 1977-10-31 1979-04-03 The Wright Tool And Forge Company Reversing-ratchet socket wrench
GB2041272A (en) * 1979-02-05 1980-09-10 Penner J Socket-type ratchet wrench with socket ejector
US4261233A (en) * 1979-02-05 1981-04-14 Thorsen Tool Company Ratchet wrench of the socket drive type

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1023001A (en) * 1910-12-20 1912-04-09 Harry C Bennetch Wrench.
US1094221A (en) * 1913-08-09 1914-04-21 James H Kuhns Wrench.
US3171307A (en) * 1963-08-19 1965-03-02 Victor J Jamal Slidable-side jaw wrench
US4452108A (en) * 1978-09-05 1984-06-05 Lawrence Irwin F Ratcheting pipe wrench
AU538922B2 (en) * 1979-07-13 1984-08-30 Kalamazoo Inc. Technology Slidable jaw wrench
AU531402B2 (en) * 1979-11-08 1983-08-25 Irwin, L.F. Ratchet pipe wrench

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR398733A (fr) * 1909-01-23 1909-06-12 Born Geb Clef à écrous à ouverture réglable
US2765691A (en) * 1954-12-03 1956-10-09 Orville S Meredith Claw operated, slidable outer jaw wrench
US4147076A (en) * 1977-10-31 1979-04-03 The Wright Tool And Forge Company Reversing-ratchet socket wrench
GB2041272A (en) * 1979-02-05 1980-09-10 Penner J Socket-type ratchet wrench with socket ejector
US4261233A (en) * 1979-02-05 1981-04-14 Thorsen Tool Company Ratchet wrench of the socket drive type

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0385437A2 (fr) * 1989-02-28 1990-09-05 Clark J. Lee Serre-tubes réversible
EP0385437A3 (fr) * 1989-02-28 1991-07-03 Clark J. Lee Serre-tubes réversible

Also Published As

Publication number Publication date
AU4930985A (en) 1986-05-08
DE3570199D1 (en) 1989-06-22
MX161491A (es) 1990-10-10
DE8514675U1 (de) 1985-08-29
EP0180831B1 (fr) 1989-05-17
ES296158U (es) 1987-08-16
ATE43086T1 (de) 1989-06-15
US4561330A (en) 1985-12-31
AU572770B2 (en) 1988-05-12
CA1240539A (fr) 1988-08-16
ES296158Y (es) 1988-03-16
NZ214030A (en) 1987-03-31

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