EP2248631A1 - Clé à extrémité ouverte à cliquet - Google Patents

Clé à extrémité ouverte à cliquet Download PDF

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Publication number
EP2248631A1
EP2248631A1 EP09159662A EP09159662A EP2248631A1 EP 2248631 A1 EP2248631 A1 EP 2248631A1 EP 09159662 A EP09159662 A EP 09159662A EP 09159662 A EP09159662 A EP 09159662A EP 2248631 A1 EP2248631 A1 EP 2248631A1
Authority
EP
European Patent Office
Prior art keywords
jaw
workpiece
wall
driving
auxiliary
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
EP09159662A
Other languages
German (de)
English (en)
Other versions
EP2248631B1 (fr
Inventor
Hsien-Chung Tuan Mu
Chung-Sung Li
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.)
Apex Tool HK Ltd Taiwan Branch
Original Assignee
Danaher Tool Ltd Taiwan Branch
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 Danaher Tool Ltd Taiwan Branch filed Critical Danaher Tool Ltd Taiwan Branch
Priority to EP09159662A priority Critical patent/EP2248631B1/fr
Priority to AT09159662T priority patent/ATE523294T1/de
Priority to EP10153675.3A priority patent/EP2255927B1/fr
Publication of EP2248631A1 publication Critical patent/EP2248631A1/fr
Application granted granted Critical
Publication of EP2248631B1 publication Critical patent/EP2248631B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
    • 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
    • B25B13/02—Spanners; Wrenches with rigid jaws
    • B25B13/08—Spanners; Wrenches with rigid jaws of open jaw type

Definitions

  • the present invention is a continuation-in-part of U.S. Ser. No. 12/136,132 filed on 10 June 2008 .
  • the invention relates to a ratchetable open-ended wrench which allows application of sequential back and forth strokes to a rotatable workpiece W without removing the wrench from the workpiece, and more particularly to a ratchetable open-ended wrench that achieves a "smooth, continuous operation" for the operators when retracting a workpiece W with sequential back and forth strokes.
  • a ratchetable open-ended wrench is known as an improved hand tool which not only achieves the functions of conventional open-ended wrench but also provides the advantage of ratchetable operation.
  • Patent Nos. TW228757 , TW278060 , TW327619 , US5533428 ( WO9615879 ), TWM310772 , US7111529 , US7077035 and US3165015 are also provided with similar ratchetable operation mechanism, such as Patent Nos. TW501515 , TW511564 , US7010999 , TW262313 , and US2,879,681 .
  • TW228757 discloses an open-ended wrench which allows application of sequential back and forth strokes for driving a screw/workpiece.
  • the wrench relies on a pair of retractable claws/jaws (2, 3) parallel to each other and disposed in the wrench head, which move along the same direction as a pair of drive springs coupled to the claws/jaws. Therefore, TW228757 , which is characterized by the retractable claws/jaws (2, 3) moving back or forth along the activation direction of the springs, can rotate a screw clockwise, and turn back in a counterclockwise direction without rotating the screw.
  • a wrench needs the counterforce or friction from the retractable claws/jaws, which are abutted against the screw, to tighten or loosen the screw.
  • the retractable claws/jaws (2, 3) of the wrench of TW228757 are formed with toothed surfaces which are parallel to each other to contact a parallel pair of sides of the screw so as to rotate the same.
  • the problem with the wrench is that, since the toothed surfaces of the jaws are substantially parallel to each other and are not perpendicular to the screw sides, the tightening/loosening performance of the wrench is poor, and the toothed structure can be easily abraded after long-term usage.
  • the jaw opening (the opening between the jaws) of the wrench must be made larger than the size of the screw/workpiece to be driven, and the retractable claws/jaws (2, 3) may be continuously abraded during operation. Therefore, such a wrench is inconvenient in use. Nevertheless, the through slots (111,121) accommodating the claws/jaws weaken the wrench head structure.
  • US5533428 ( WO9615879 ) and TW327619 remedy some of the above defects by providing a wrench providing a single L-shaped retractable claw/jaw 15 which moves in the same direction as a driving spring coupled therewith within a slot 23 inward facing a base portion of the wrench driving head which is near a handle 21, with a modified driving head structure.
  • the retractable jaw 15 has a second engaging surface 14 in parallel to a first engaging surface 13 on a first jaw 11.
  • the problem with this wrench is that, during the wrench "reverse rotation" at which the nut is not rotated, the wrench cannot be operated smoothly.
  • the wrench reverse rotation is easily held up because a corner 75 of the nut 60 will block the retracting action of the retractable jaw 15 may tend to block the retractable jaw member 15.
  • the inventions provide a chamfered edge 16 between forward surface 30 and engaging surface 14 to allow for improved ratchetability of the retractable jaw 15 to alleviate the above problem, there remain some other defects.
  • the driving opening of the wrench driving head is characterized by a complicated structure including bearing surface 50 and recesses 51-53 which are not smoothly connected to each other, and the jaw opening must be larger than the nut/screw/workpiece to be driven, which results in an increased weight of the wrench and inaccurate sizing of jaw opening.
  • US6,637,300 ( TW501515 ), US7,010,999 ( TW200637692 ) and TW511564 issued to Arthur Wu disclose ratchetable adjustable spanners which adopt "pivot-type claw/jaws.”
  • US6637300 discloses slots 14 which laterally penetrate a fixed jaw 11, and rotatable devices (pivoted jaws) 40, 66 with a symmetrical, paired structure pivotally fixed in said two slots 14, so that the rotatable devices 40, 66 can be clamped between stopping portions 15.
  • the wrench can tighten/loosen a screw in one direction, and turn back without rotating the screw in the opposite direction.
  • US6637300 has the following disadvantages: (1) The rotatable devices (pivoted claws) 40, 66 are complicated by providing symmetrical, T-shaped and paired structures. (2) The rotatable devices 40, 66 clamped between the two stopping portions 15 cannot be retracted into the slots 14 receiving said rotatable devices 40,60, so the wrench driving opening must be made larger, which results in an increased weight, and the ratachetable structure can only be used with an "adjustable spanner" instead of an "open-ended wrench.” (3) The springs 50, 67 are disposed on a pivot, so the rebounding force of the rotatable devices 40, 66 is small, and the operation performance is not good.
  • the slot 14 for accommodating the rotatable devices 40, 66 penetrates the head portion of the wrench, which weaken the strength of the wrench head.
  • TW511564 and US7,010,999 ( TW 200637692 ) change the through slot 14 of US6,637,300 to an arcuated, C-shaped opening to acquire a higher strength, and change the "rotatable devices (pivoted claws) 40, 66" of TW501515 with "driving rollers” activated by springs.
  • driving rollers are big, however.
  • the fixed jaw must be made larger.
  • the present invention is directed to a ratchetable open-ended wrench, which includes a handle for a hand to grasp, a wrench head located on one end of the handle, and a fastener room located in the wrench head for accommodating a workpiece to be rotated.
  • the wrench head further includes a first jaw having a first driving wall, a second jaw having a second driving wall facing the first driving wall, an inner wall extending from the second driving wall toward the inside portion of the second jaw, a fastener-jaw concavity, an auxiliary jaw retracting opening, an auxiliary jaw elastically and longitudinally slidable along the auxiliary jaw retracting opening, and an auxiliary jaw limiting member coupled with the limiting slot.
  • the auxiliary jaw further includes an exterior end having a pillow in contact with the inner wall and a pushing surface for working together with the first jaw to grip and rotate the workpiece W, an interior end, and a limiting slot.
  • FIGs. 1A to 1B are schematic three-dimensional views of the present invention.
  • FIG. 2A is a schematic view of the present invention showing the structure near the auxiliary jaw
  • FIG. 2B is a plane view of Fig. 1B of the present invention.
  • FIGs. 3A to 3E are schematic views showing the wrench reverse rotation operation during which the workpiece is not rotated according to the present invention.
  • FIGs. 1A to 2B a preferred embodiment of a ratchetable open-ended wrench 1 for turning a rototable workpiece W is shown.
  • the "workpiece” refers to, for example, a fastener like screw/nut, or any other hand tool having a polygonal driven part and capable of being driven by a wrench.
  • the workpiece W hereinafter only stands for to the driven part of the workpiece W (e.g., a bolt head or a driven end of an adaptor) that is driven by the wrench.
  • the ratchetable open-ended wrench 1 substantially comprises a handle H for a hand to grasp and a wrench head 100 for rotating the workpiece W, which includes a drive opening therein and located on one end of the handle H.
  • the wrench head 100 preferably includes a first jaw 110 having a first driving wall 114, a second jaw 120 substantially extending from a base portion 200 of the wrench head 100 adjoining the handle to a free end 122, and a fastener room 160 located in the drive opening of the wrench head 100 for accommodating the workpiece W to be rotated.
  • the first jaw 110 is preferably formed with a recessed portion 112 capable of accommodating the angled portion of the workpiece W is an inner section (a section away from the first driving wall 114) thereof (see FIG. 2A ) to facilitate smooth operation during the reverse rotation of the wrench at which the workpiece W is not rotated.
  • the recessed portion 112 of the first jaw 110 may be omitted, and the inside portion of the second jaw 120 is made larger so as to accommodate the workpiece W during the reverse rotation of the wrench without rotating the workpiece W.
  • the weight of the wrench is increased, the functions of the wrench of the present invention can still be achieved.
  • the second jaw 120 comprises:
  • the inner wall 126 is preferably formed with a slot having a U-shaped cross-section so as to allow the auxiliary jaw 140 to slide thereon.
  • the U-shaped slot extends from the auxiliary jaw retracting opening 130 toward the jaw opening 170 and has a longitudinal opening facing the auxiliary jaw 140. Therefore, the auxiliary jaw 140 can be partly embraced in the U-shaped inner wall 126 during its movement in the slot.
  • the rear-end wall 127 is preferably arranged in a way that it does not exceed a half of a workpiece contact edge WS that is adjacent to the base portion 200 (i.e., the rear-end wall 127 does not exceed an inner half portion of the workpiece contact edge WS). Accordingly, when the open-ended wrench 1 is used to roatate a workpiece W, the rear-end wall 127 will share a part of the torque required to drive the workpiece W; whereas when the open-ended wrench 1 is ratcheted back with no loosening/tightening action, the rear-end wall 127 will not obstruct the movement of the auxiliary jaw 140 relative to the associated contact edge WS of the workpiece W.
  • the smallest width between the rear-end wall 127 and the first driving wall 114 of the first jaw 110 is approximately the size of the workpiece W.
  • the auxiliary jaw 140 preferably comprises a pillow 142 facing the inner wall 126 for contacting/abutting it and a "fastener contact surface" for contacting the workpiece W.
  • the "fastener contact surface” comprises a driving surface 143 and a pushing surface 144.
  • the minimum width between the "fastener contact surface" thereof and the first driving wall 114 of the first jaw 110 is substantially equal to the size of the workpiece W.
  • the driving surface 143 substantially faces a workpiece contact edge WS of the workpiece W to be rotated, so that it can work with the first jaw 110 to grip the workpiece W and apply a force (torque) thereto during operation.
  • the driving surface 143 is preferably formed with corrugations shown in the drawings or similar friction structure to obtain a better gripping force.
  • the pushing surface 144 is substantially directed toward the drive opening and adjacent to the portion of the workpiece contact edge WS that is away from the base portion 200 (which means that the pushing surface 144 faces an outer portion of the contact edge WS, as shown in FIG.
  • the pushing surface 144 preferably includes a gentle cambered/curved surface.
  • the driving surface 143 is connected to the pushing surface 144 preferably by a smooth cambered/curved surface.
  • the "fastener contact surface" of the auxiliary jaw 140 extends with a curved surface from the driving surface 143 to the pushing surface 144 (that is, the pushing surface 144 itself has a cambered/curved surface, and the pushing surface 144 is connected to the driving surface 143 by a cambered/curved surface), thereby making the workpiece W smoothly slide from the driving surface 143 to the pushing surface 144.
  • users who tighten/loosen the workpiece W by the ratchetable open-ended wrench 1 of the present invention can perform a series of smooth, continuous operation steps, including inserting the ratchetable open-ended wrench 1 to the workpiece W, rotating the workpiece W by the wrench 1, and ratcheting the wrench 1 back without loosening/tightening the workpiece W.
  • prior art references such as US5533428 and US7111529 in which the back-ratcheting rotation require a series of sequential partial-turn strokes which are not continuous or smooth due to the complicated wrench head structures (in these patents, users must partially "move” the wrench during back-ratcheting operation of the wrench to find appropriate positions for force application), the present invention significantly improves back-ratcheting operation of the wrench.
  • the open-ended wrench 1 of the present invention when the open-ended wrench 1 of the present invention is the driving operation, the rear-end wall 127 and the driving surface 143 of the auxiliary jaw 140 work together to provide the torque required to drive the workpiece W; whereas when the open-ended wrench 1 is ratcheted back with no loosening/tightening action, the pushing surface 144 of the auxiliary jaw 140 can be pushed by the outer portion of the contact edge WS of the workpiece W and the end of rear-end wall 127 will not obstruct the movement of the auxiliary jaw 140 relative to the associated contact edge WS of the workpiece W. Therefore, a smooth operation of the open-ended wrench 1 can be obtained no matter if it is in the driving operation or reverse operation.
  • the limiting slot 148 is preferably in the form of a longitudinal notch located on one side of the auxiliary jaw 140, and defined between a shoulder 154 of the pillow 142, a shoulder 156 of the interior end 146, and the inner wall 126.
  • the limiting slot 148 is a notch having a U-shaped structure near a side of the auxiliary jaw 140, and is surrounded by the inner wall 126 so as to work as a groove/slot.
  • the auxiliary jaw limiting member 150 is coupled in the limiting slot 148, so that auxiliary jaw 140 moves between a first position (at which the auxiliary jaw 140 is unbiased by the workpiece W and fully extended by the spring S) and a second position (in which the auxiliary jaw 140 is biased and fully compressed by the workpiece W), due to the blocking of the shoulders 154 and 156.
  • the limiting slot 148 is a longitudinal notch substantially located in the auxiliary jaw 140 and spaced a distance (not shown) from the periphery of the auxiliary jaw 140 and the inner wall 126.
  • the included angle between the driving surface 143 and a longitudinal centerline of the auxiliary jaw 140 is made as small as possible, so that when the user uses the ratchetable open-ended wrench 1 to rotate (tighten or loosen) the workpiece W, at least a large part of or the overall torque on the auxiliary jaw 140 is converted into a component force along the radial direction of the auxiliary jaw 140.
  • the pushing surface 144 of the auxiliary jaw 140 extends from an end adjacent to the inner wall 126 to the driving surface 143 preferably shaped as a gentle cambered/curved surface.
  • a direction of force application between the contact edge WS of the workpiece W and the pushing surface 144 is mostly or almost parallel to the longitudinal centerline of the auxiliary jaw 140 (or of the auxiliary jaw retracting opening 130), so all or most of the force applied to the pushing surface 144 can be parallel to the longitudinal centerline of the auxiliary jaw 140, thus reducing the abrasion between the pillow 142 and the inner wall 126.
  • the fastener room 160 is used to accommodate the workpiece W to be rotated, which is substantially located between the auxiliary jaw 140 and the first driving wall 114, and adjoins the concavity 128.
  • the fastener room 160 and the concavity 128 work together in such a way that they form a working space which is sufficiently large to allow the workpiece W to remain therein for a turn of the wrench head 100/handle H, e.g., a full 360-degree turn or a back turn without rotating the workpiece W. Therefore, whenever the ratchetable open-ended wrench 1 is operated to rotate the workpiece W or is ratcheted back without rotating the same, there is no need to remove the wrench 1 from the workpiece W. That is, the steps of rotating the workpiece W by the wrench 1 and ratcheting the wrench 1 back without rotating the workpiece W can be completed with the workpiece W remaining in the working space formed by the fastener room 160 and the concavity 128.
  • a jaw opening 170 is defined between the first driving wall 114 of the first jaw 110 and the second driving wall 124 of the second jaw 120.
  • the width of the jaw opening 170 is substantially the same as the size of the workpiece W to be rotated, so that the first jaw 110 together with the second jaw 120 may tighten/loosen the workpiece W as a typical open-ended wrench.
  • the ratchetable open-ended wrench 1 can be manufactured with less material, and can be applied to small-sized wrenches for small workpieces W. Further, as indicated above, according to the present invention, the minimum width between the "fastener contact surface" of the auxiliary jaw 140 and the first driving wall 114 of the first jaw 110 may be substantially equal to the size of the workpiece W.
  • the overall operation including gripping the workpiece W with the jaw opening 170 of the ratchetable open-ended wrench 1, rotating the workpiece W by the wrench 1, ratcheting the wrench 1 back without loosening/tightening the workpiece W, and again rotating the workpiece W again, is very smooth.
  • Another advantage is that the auxiliary jaw retracting opening 130 of the present invention is formed in the base portion 200, which does not need the cover plates of US7,111,529 or a welding process.
  • FIGs. 3A to 3G are schematic views showing how the back-ratcheting movement of ratchetable open-ended wrench 1 without loosening/tightening the workpiece W is achieved.
  • the workpiece W is a hexagonal nut, so each back-ratcheting movement of wrench 1 around an angle of workpiece W requires a turn of 60°, as illustrated in FIGs. 3A to 3G.
  • FIGs. 3A-3B, 3B-3C, 3C-3D and 3D-3G show the relative positions between the auxiliary jaw 140 and the contact edge WS of the workpiece W each time the wrench head 100 turns back 10°.
  • FIG. 3A-3B, 3B-3C, 3C-3D and 3D-3G show the relative positions between the auxiliary jaw 140 and the contact edge WS of the workpiece W each time the wrench head 100 turns back 10°.
  • the auxiliary jaw 140 reaches the first position in which the workpiece W does not longitudinally bias the auxiliary jaw 140, with the driving surface 143 preferably close to the contact edge WS. In this position, the auxiliary jaw 140 and the rear-end wall 127 work with the first jaw 110 to grip the nut. Accordingly, if the ratchetable open-ended wrench 1 turns in the clockwise direction, the nut can be tightened/loosened. As shown in FIG.
EP09159662A 2009-05-07 2009-05-07 Clé à extrémité ouverte à cliquet Active EP2248631B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP09159662A EP2248631B1 (fr) 2009-05-07 2009-05-07 Clé à extrémité ouverte à cliquet
AT09159662T ATE523294T1 (de) 2009-05-07 2009-05-07 Offener ratschenschlüssel
EP10153675.3A EP2255927B1 (fr) 2009-05-07 2010-02-16 Clé à extrémité ouverte à cliquet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09159662A EP2248631B1 (fr) 2009-05-07 2009-05-07 Clé à extrémité ouverte à cliquet

Publications (2)

Publication Number Publication Date
EP2248631A1 true EP2248631A1 (fr) 2010-11-10
EP2248631B1 EP2248631B1 (fr) 2011-09-07

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EP09159662A Active EP2248631B1 (fr) 2009-05-07 2009-05-07 Clé à extrémité ouverte à cliquet
EP10153675.3A Active EP2255927B1 (fr) 2009-05-07 2010-02-16 Clé à extrémité ouverte à cliquet

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EP10153675.3A Active EP2255927B1 (fr) 2009-05-07 2010-02-16 Clé à extrémité ouverte à cliquet

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AT (1) ATE523294T1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113300127A (zh) * 2021-05-27 2021-08-24 广东电网有限责任公司 一种接地工具

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8347764B2 (en) 2008-06-10 2013-01-08 Apex Tool (Hk) Limited Taiwan Branch Ratchetable open-ended wrench
TW201242723A (en) * 2011-04-29 2012-11-01 Hou-Fei Hu High-torque quick release reciprocating open-end wrench
TWI460054B (zh) * 2012-07-05 2014-11-11 Infar Ind Co Ltd 防潰角開口快轉扳手
TWI468260B (zh) * 2012-08-07 2015-01-11 Infar Ind Co Ltd 防潰角開口快轉扳手（二）

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2652735A (en) * 1949-03-22 1953-09-22 Glenn W Wilder Open-end wrench
US2879681A (en) 1957-10-28 1959-03-31 Howard C Blasdell Slidable jaw-face, open-end wrench
US3165015A (en) 1963-01-26 1965-01-12 John H Farley Wrench
WO1996015879A1 (fr) 1994-11-21 1996-05-30 Pradelski William M Cle de serrage ouverte a rochet
TW278060B (en) 1994-07-22 1996-06-11 Gwo-Shiun Shu Teeth engagement wrench
DE10204805A1 (de) * 2002-02-06 2003-08-14 Markus Feldhaus Maulschlüssel mit freiem Rückhub
US6637300B2 (en) 2002-02-21 2003-10-28 Arthur Wu Reversible adjustable wrench
DE202005019936U1 (de) * 2005-12-21 2006-02-16 Chang, Hui-Ling, Taiping Gabelschlüssel
US7010999B1 (en) 2005-05-10 2006-03-14 Proxent Tools Co., Ltd Bi-directional adjustable spanner with a driving roller
US7077035B1 (en) 2005-04-27 2006-07-18 Ping Wen Huang Ratchet open-end wrench
US7111529B2 (en) 2003-07-25 2006-09-26 Pradelski William W Ratchetable open-ended wrench
TW200637692A (en) 2005-04-26 2006-11-01 Proxene Tools Co Ltd Adjustable wrench

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWM262313U (en) 2004-08-04 2005-04-21 Bing-Wen Huang Open-end wrench with ratchet function
TWM310772U (en) 2006-09-08 2007-05-01 Ching-An Jiang Open-end wrench allowing unidirectional operation

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2652735A (en) * 1949-03-22 1953-09-22 Glenn W Wilder Open-end wrench
US2879681A (en) 1957-10-28 1959-03-31 Howard C Blasdell Slidable jaw-face, open-end wrench
US3165015A (en) 1963-01-26 1965-01-12 John H Farley Wrench
TW278060B (en) 1994-07-22 1996-06-11 Gwo-Shiun Shu Teeth engagement wrench
TW327619B (en) 1994-11-21 1998-03-01 Pradelski Bill Ratchetable wrench and method for ratchetably turning a rotatable element with a wrench
US5533428A (en) 1994-11-21 1996-07-09 Pradelski; William M. Ratchetable open-ended wrench
WO1996015879A1 (fr) 1994-11-21 1996-05-30 Pradelski William M Cle de serrage ouverte a rochet
DE10204805A1 (de) * 2002-02-06 2003-08-14 Markus Feldhaus Maulschlüssel mit freiem Rückhub
US6637300B2 (en) 2002-02-21 2003-10-28 Arthur Wu Reversible adjustable wrench
US7111529B2 (en) 2003-07-25 2006-09-26 Pradelski William W Ratchetable open-ended wrench
TW200637692A (en) 2005-04-26 2006-11-01 Proxene Tools Co Ltd Adjustable wrench
US7077035B1 (en) 2005-04-27 2006-07-18 Ping Wen Huang Ratchet open-end wrench
US7010999B1 (en) 2005-05-10 2006-03-14 Proxent Tools Co., Ltd Bi-directional adjustable spanner with a driving roller
DE202005019936U1 (de) * 2005-12-21 2006-02-16 Chang, Hui-Ling, Taiping Gabelschlüssel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113300127A (zh) * 2021-05-27 2021-08-24 广东电网有限责任公司 一种接地工具
CN113300127B (zh) * 2021-05-27 2022-07-12 广东电网有限责任公司 一种接地工具

Also Published As

Publication number Publication date
EP2248631B1 (fr) 2011-09-07
ATE523294T1 (de) 2011-09-15
EP2255927A2 (fr) 2010-12-01
EP2255927A3 (fr) 2012-03-28
EP2255927B1 (fr) 2015-08-05

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