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EP2556925B1 - Clé à extrémité ouverte à cliquet - Google Patents

Clé à extrémité ouverte à cliquet Download PDF

Info

Publication number
EP2556925B1
EP2556925B1 EP12180182.3A EP12180182A EP2556925B1 EP 2556925 B1 EP2556925 B1 EP 2556925B1 EP 12180182 A EP12180182 A EP 12180182A EP 2556925 B1 EP2556925 B1 EP 2556925B1
Authority
EP
European Patent Office
Prior art keywords
head portion
sliding groove
fixed jaw
sliding
working portion
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.)
Not-in-force
Application number
EP12180182.3A
Other languages
German (de)
English (en)
Other versions
EP2556925A2 (fr
EP2556925A3 (fr
Inventor
Arthur Wu
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.)
Proxene Tools Co Ltd
Original Assignee
Proxene Tools Co Ltd
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 Proxene Tools Co Ltd filed Critical Proxene Tools Co Ltd
Priority to SI201230405T priority Critical patent/SI2556925T1/sl
Publication of EP2556925A2 publication Critical patent/EP2556925A2/fr
Publication of EP2556925A3 publication Critical patent/EP2556925A3/fr
Application granted granted Critical
Publication of EP2556925B1 publication Critical patent/EP2556925B1/fr
Not-in-force 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
    • B25B13/02—Spanners; Wrenches with rigid jaws
    • B25B13/08—Spanners; Wrenches with rigid jaws of open jaw type
    • 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

Definitions

  • the present invention relates to a ratchet-action open-end wrench.
  • Conventional ratchet-action open-end wrench as shown in US 4,637,284 , has a fixed jaw, a movable jaw which is able to slide linearly, and an elastic member. In an operation condition, user can pull the wrench back and forth.
  • the movable jaw is able to reciprocate with respect to the fixed jaw.
  • the movable jaw can clutch threaded member along only a predetermined direction, so that the threaded member is rotated along the predetermined direction.
  • the threaded member would be released and would rotate with respect to the wrench when the wrench is pulled along the opposite direction. Threaded member can be detached or fastened easily.
  • the wrench mentioned above is not suitable for being used in a narrowed environment.
  • Moving direction of the movable jaw is simply aimed away from the fixed jaw, even away from handle of the wrench.
  • Considerable movement of the movable jaw is necessary for releasing the threaded member.
  • the movable jaw would probably blocked by other objects, especially in narrowed environment, failing to move and to release the threaded member.
  • wrenches are provided in several patents, such as US 5,287,777 , US 5,582,082 , and US 7,827,887 . These wrenches are suitable to be used in narrowed space, providing ratchet-action function.
  • the wrench revealed in US 5,287,777 which discloses the features of the preamble portion of claim 1, is similar to the wrench revealed in US 7,827,887 .
  • the movable jaws of the wrenches are slidable along a segmental pathway which is defined and limited by a pin, an arc-shaped hole, and several arc-shaped surfaces. Thus, the movable jaw is unable to rotate arbitrarily.
  • the other wrench shown in US 5,582,082 is provided with a pin and a linear extended hole, so that movable jaw of the wrench is able to slide. Further, both of movable jaw and fixed jaw of the wrench is formed with an arc-shaped surface. The arc-shaped surfaces are used for limiting sliding pathway of the movable jaw, so that the movable jaw can only slide with respect to the fixed jaw.
  • the wrenches mentioned above are suitable for narrowed space, being welcomed in the market.
  • the wrenches are difficult to be produced.
  • the components of the wrenches should be formed with several specific contours, especially arc-shaped surfaces, some of which are located in grooves.
  • the arc-shaped surfaces are necessary for keeping the movable jaw in the predetermined pathway.
  • the arc-shaped surfaces are very difficult to be machined or processed.
  • the arc-shaped surface of the wrench described in US 7,827,887 is located at an interior side of opening of the wrench. Machining tool, such as milling cutter, can hardly move into the opening. Thus, machining is obstructed.
  • precision casting may be chosen as a main process.
  • structure strength the wrench would be unwelcomed in strict operation condition.
  • surface precision movement of movable jaw of the wrench would be obstructed by dust.
  • precision casting would bring the manufacturing cost high. Market competitiveness of the wrenches would be probably destroyed by the disadvantages mentioned above.
  • the present invention is, therefore, arisen to obviate or at least mitigate the above mentioned disadvantages.
  • the main object of the present invention is to provide another ratchet-action open-end wrench which can be machined easily.
  • a ratchet-action open-end wrench of the present invention includes a main body, a working portion, a slidable mechanism, and an elastic member.
  • Said main body has a handle, at least a head portion, and a fixed jaw.
  • the head portion is connected to one end of the handle.
  • the fixed jaw extends and protrudes out from the head portion.
  • Said working portion has at least a connection arm and a movable jaw.
  • the connection arm abuts against the head portion.
  • An opening is defined by the movable jaw and the fixed jaw.
  • Said slidable mechanism comprises a sliding groove and a sliding portion.
  • the sliding groove is formed on one of the head portion and the connection arm.
  • the sliding portion is firmly disposed on the other one of the head portion and the connection arm.
  • the sliding portion is slidably disposed on the sliding groove, so that the working portion is able to slide along the sliding groove with respect to the main body.
  • the working portion is slidable between a first position and a second position. A width of the opening is minified when the working portion slides toward the first position.
  • the sliding groove is arc-shaped. An arc center of the sliding groove is located out of the head portion.
  • the main body is located between the arc center and the movable jaw.
  • the sliding portion has a non-circular cross section, so that the sliding portion is unable to rotate in the sliding groove arbitrarily.
  • Said elastic member abuts against the main body and the working portion, so that the working portion has a tendency to slide toward the first position.
  • the ratchet-action open-end wrench of the present embodiment has an opening which is provided for clamping threaded member, such as screw, nut, or other similar component. User can pull the wrench back and forth. The wrench would drive the threaded member to rotate along a single direction so as to detach or fasten the threaded member.
  • the wrench includes a main body 1, a working portion 2, a slidable mechanism 3, and an elastic member 4.
  • the main body 1 has a handle 11, a head portion 12, and a fixed jaw 13.
  • the head portion 12 is connected to one end of the handle 11.
  • the fixed jaw 13 extends and protrudes out from the head portion.
  • the head portion 12 connects the handle 11 to the fixed jaw 13.
  • handling bar or hanging hole may be disposed on one end of the handle 11, where is away from the head portion 12.
  • the fixed jaw 13 may be further formed with a recess 131.
  • the head portion 12 is formed with a receiving groove 121. Thickness of the fixed jaw 13 may be greater than thickness of the head portion 12.
  • the main body 1 can be formed with two step surfaces on two sides of the main body 1, as shown in Fig. 2 and Fig. 3 .
  • the step surfaces are located between the fixed jaw 13 and the head portion 12.
  • it is also possible that the main body is formed with single step surface on one side of the main body.
  • the working portion 2 has two connection arms 21 and a movable jaw 22, as shown in Fig. 2 and Fig. 3 .
  • the connection arms 21 abut against the head portion 12.
  • the head portion 12 is located between the two connection arms 21.
  • the movable jaw 22 is connected to the connection arms 21.
  • the movable jaw 22 and the fixed jaw 13 are facing each other so as to define the opening therebetween.
  • the movable jaw 22 may formed with the other recess 221.
  • the recess 221 of the movable jaw and the recess 131 of the fixed jaw are facing each other.
  • the recesses 221, 131 are able to clamp corners of a polygonal column of a threaded member 5, as shown in Fig. 4 .
  • Each of the connection arms 21 is formed with a fixation hole 211.
  • the working portion 2 has two connection arms 21 so as to clip the head portion 12 therein. Dust or debris would be blocked out by the connection arms 21 so as to keep motion of the head portion 12 and the connection arms 21 smooth.
  • the working portion may have only one connection arm.
  • the main body has two head portion correspondingly. Thus, connection arm can be positioned between the two head portion, obtaining similar dust-proof effect.
  • the slidable mechanism 3 includes a sliding groove 31 and a sliding portion.
  • the sliding groove 31 is formed on the head portion 12.
  • the sliding portion is firmly disposed on the connection arms 21. More particularly, the sliding portion includes a sliding member 321 and a fixation pin 322.
  • the sliding member 321 is slidably received in the sliding groove 31.
  • the sliding member 321 is formed with an aperture 323.
  • the fixation pin 322 penetrates through the aperture 323 and is received in fixation holes 211 of the connection arms 21. It should be noted that the fixation pin 322 should be unable to rotate with respect to the sliding member 321 and the connection arms 21.
  • the fixation pin 322, the aperture 323, and the fixation holes 211 may be formed with non-circular cross section if necessary.
  • the sliding portion is slidably disposed on the sliding groove 31.
  • the working portion 2 is able to slide along the sliding groove 31 with respect to the main body 1.
  • the sliding member 321 is formed in arc-shaped, so that the sliding portion has a non-circular cross section.
  • the sliding portion is unable to rotate in the sliding groove 31 arbitrarily.
  • the sliding groove 31 extends and is formed arc-shaped.
  • Arc center 311 of the sliding groove 31 is located out of the head portion 12, as shown in Fig. 4 .
  • the movable jaw 22 is located at right side of the main body 1, and the arc center 311 is located at left side of the main body 1. In other words, the movable jaw 22 and the arc center 311 are located at opposite sides divided by the main body 1.
  • width of the opening would be changed when the working portion 2 and the movable jaw 22 move along the sliding groove together with the sliding portion.
  • the sliding portion is still able to rotate in a universal aspect since the sliding groove 31 is arc-shaped. However, the rotation caused by sliding along the sliding groove 31 is ignored here. Rotation of the sliding portion discussed above is rotation of the sliding portion with respect to the sliding groove. Unable to rotate of the sliding portion with respect the sliding groove should not be regarded as that the sliding portion is unable to slide and rotate along curved sliding groove.
  • the elastic member 4 abuts against and locates between the main body 1 and the working portion 2. More particularly, the elastic member 4 is received in the receiving groove 121 of the head portion, and abuts against the working portion 2.
  • the sliding portion is able to slide along the sliding groove 31.
  • the sliding portion is firmly disposed on the connection arms 21 of the working portion.
  • the working portion 2 can slide along the arc-shaped sliding groove 31 together with the sliding portion.
  • the working portion 2 can slide between a first position and a second position.
  • the opening defines a width direction.
  • the opening is used for clamping a threaded member 5 therein.
  • Two opposite ends of the working portion 2, the fixed jaw 13, and the head portion 12 has an initial width Do therebetween.
  • the working portion 2 is able to slide along the sliding groove 31 toward the second position.
  • the threaded member 5 can escape from the fixed jaw 13 and the movable jaw 22 so as to rotate in the opening arbitrarily.
  • Two opposite ends of the working portion 2, the fixed jaw 13, and the head portion 12 has a maximum width Dm therebetween.
  • subtraction of the maximum width Dm and the initial width Do is smaller than ten percent of the initial width Do.
  • the threaded member 5 can escape from the opening without overly movement of the working portion 2.
  • the opening can clamp the threaded member 5 immediately so as to fasten or detach the threaded member 5 easily.
  • the wrench is suitable for operating in narrowed space since motion of the working portion 2 is minified by employing the arc-shaped sliding groove.
  • the elastic member 4 abuts against the working portion 2, so that the working portion 2 has a tendency to slide toward the first position.
  • the working portion 2 would slide to the first position when the working portion 2 is released from external force.
  • the connection arms 21 would abut against the step surfaces. Width of two opposite ends of the working portion 2, the fixed jaw 13, and the head portion 12 is then return to the initial width Do.
  • the sliding groove 31 is formed on the head portion 12.
  • the sliding portion is firmly disposed on the connection arms 21.
  • position of the sliding groove 31 and position of the sliding portion may be interchanged.
  • the sliding groove may be formed on the connection arms, and the sliding portion may be firmly disposed on the head portion.
  • the fixation holes of the connection arms should be removed, and the head portion should be formed with the corresponding fixation hole.
  • the sliding portion can be assembled on or attached to the head portion by fabrication or other manners.
  • a second embodiment of the present invention structure of the wrench is approximately similar to the wrench of the first embodiment.
  • the sliding portion is replaced with two pins 324.
  • Each of the connection arms 21 is formed with two fixation holes 211.
  • Each of the pins 324 penetrates through the sliding groove 31 and is received in two corresponding fixation holes 211 which are located on the connection arms respectively.
  • the pins 324 are able to slide along the sliding groove 31.
  • the working portion 2 is still able to slide along the arc-shaped sliding groove 31 between the first position and the second position, as shown in Fig. 8 and Fig. 9 .
  • the pin 324 may has circular cross sections respectively; even so, the cross section of the sliding portion is still non-circular since each of the pins 324 is regarded as only a part of the sliding portion.
  • the working portion 2 is still unable to slide in the sliding groove 31 arbitrarily.
  • whether each of the pins 324 is able to rotate is not limited. As such, the structure of the wrench is further simplified in the second embodiment.
  • the opening has a bottom end near the connection arm 21 a which is opposite to an open end of the opening.
  • the recess 221 a on the movable jaw 22a is more distant than the recess 131a on the fixed jaw 13a from the bottom end of the opening so that the two recesses 221a,131a are not symmetrical positionally.
  • an angle should be rotated to reposition a corner of the threaded member to the recess 221 a on the movable jaw 22a is decreased, so that it is easier for a user to operate back and forth.
  • a fourth embodiment is provided as shown in Fig. 11 .
  • a free end of the fixed jaw 13b has an inclined face 133 facing the opening.
  • the inclined face 133 is inclined toward the open end of the opening.
  • the notch 133 on the fixed jaw 13b is recessed away from the movable jaw 22b, and the notch 222 is recessed away form the fixed jaw 13b. With the notches 132,222, the fixed jaw 13b and the movable jaw 22b are prevented from abutting against corners of the threaded member 5. Thus, abrasion of the threaded member 5 is avoided.
  • the wrenches of the present embodiments have simplified structures. It is noted that arc-shaped abutting surface is dismissed, and only arc-shaped groove which can be manufactured easily is retained.
  • the components are suitable for machining and processing. Producing processes, such as machining, folding, casting, and pressing, can be chosen as the main producing process. As such, cost, precision, and structure strength can be managed well.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Claims (7)

  1. Clé à fourche à cliquet, comprenant :
    un corps principal (1) comportant un manche (11), au moins une partie tête (12), et une mâchoire fixe (13), la partie tête (12) étant reliée à une extrémité du manche (11), la mâchoire fixe (13) s'étendant et faisant saillie à partir de la partie tête (12) ;
    une partie travail (2), comportant au moins un bras de liaison (21) et une mâchoire mobile (22), le bras de liaison (21) venant en butée contre la partie tête (12), une ouverture étant définie par la mâchoire mobile (22) et la mâchoire fixe (13) ;
    un mécanisme coulissant (3), comprenant une rainure de coulissement (31) et une partie coulissante, la rainure de coulissement (31) étant formée sur l'un de la partie tête (12) et du bras de liaison (21), la partie coulissante étant disposée fermement sur l'autre de la partie tête (12) et du bras de liaison (21), la partie coulissante étant disposée de manière coulissante sur la rainure de coulissement (31), de sorte que la partie travail (2) est capable de coulisser le long de la rainure de coulissement (31) par rapport au corps principal (1), la partie travail (2) pouvant coulisser entre une première position et une seconde position, une largeur de l'ouverture étant réduite lorsque la partie travail (2) coulisse vers la première position, la rainure de coulissement (31) étant en forme d'arc, la partie coulissante ayant une section transversale non circulaire,
    de sorte que la partie coulissante est incapable de tourner dans la rainure de coulissement (31) de façon arbitraire ;
    un élément élastique (4), venant en butée contre le corps principal (1) et la partie travail (2), de sorte que la partie travail (2) a tendance à glisser vers la première position,
    caractérisée en ce qu'un centre d'arc (311) de la rainure de glissement (31) est situé hors de la partie tête (12), le centre d'arc (311) et la mâchoire mobile (22) étant situés sur des côtés opposés divisés par le corps principal (1).
  2. Clé à fourche à cliquet selon la revendication 1, dans laquelle la partie travail (2) comporte deux bras de liaison (21), les bras de liaison (21) viennent en butée contre la partie tête (12), la partie tête (12) est située entre les deux bras de liaison (21) et la rainure de coulissement (31) est formée sur la partie tête (12).
  3. Clé à fourche à cliquet selon la revendication 2, dans laquelle chacun des bras de liaison (21) est pourvu de deux trous de fixation (211), la partie coulissante comporte deux goupilles (324), chacune des goupilles (324) pénètre à travers la rainure de coulissement (31) et est reçue dans deux trous de fixation correspondants (211) qui sont situés sur les bras de liaison (21), respectivement, et les goupilles (324) sont capables de coulisser le long de la rainure de coulissement (31).
  4. Clé à fourche à cliquet selon les revendications 1 à 3, dans laquelle une épaisseur de la mâchoire fixe (13) est supérieure à une épaisseur de la partie tête (12), le corps principal (1) est pourvu d'au moins une surface en gradins, la surface en gradins est située entre la mâchoire fixe (13) et la partie tête (12), le bras de liaison (21) vient en butée contre la surface en gradins lorsque la partie travail (2) se trouve dans la première position.
  5. Clé à fourche à cliquet selon la revendication 1, dans laquelle chacune de la mâchoire fixe (13) et de la mâchoire mobile (22) est pourvue d'un évidement (131, 221), les évidements (131, 221) se font face l'un à l'autre pour serrer des coins d'une colonne polygonale.
  6. Clé à fourche à cliquet selon la revendication 5, dans laquelle l'ouverture a une extrémité inférieure à proximité du bras de liaison (21 a), l'évidement (221 a) sur la mâchoire mobile (22a) est plus éloigné que l'évidement (131 a) sur la mâchoire fixe (13a) par rapport à l'extrémité inférieure de l'ouverture de sorte que les deux évidements sur la mâchoire mobile (22a) et sur la mâchoire fixe (13a) ne sont pas symétriques en position.
  7. Clé à fourche à cliquet selon la revendication 1, dans laquelle l'ouverture définit une direction de largeur ; lorsque la partie travail (2) se trouve dans la première position, l'ouverture est conçue pour qu'un élément fileté (5) soit serré dans celle-ci, et deux extrémités opposées de la partie travail (2), la mâchoire fixe (13) et la partie tête (12) ont une largeur initiale (Do) entre elles ; lorsque la partie travail (2) coulisse vers la seconde position, et l'élément fileté (5), qui est situé entre la mâchoire fixe (13) et la mâchoire mobile (22), est capable de tourner de façon arbitraire, deux extrémités opposées de la partie travail (2), la mâchoire fixe (13) et la partie tête (12) ont une largeur maximale (Dm) ; et la soustraction de la largeur maximale (Dm) et de la largeur initiale (Do) est inférieure à dix pour cent de la largeur initiale (Do).
EP12180182.3A 2011-08-12 2012-08-10 Clé à extrémité ouverte à cliquet Not-in-force EP2556925B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201230405T SI2556925T1 (sl) 2011-08-12 2012-08-10 Ključ z odprtim koncem z ragljo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW100128816A TWI398324B (zh) 2011-08-12 2011-08-12 可往復棘輪式之開口扳手

Publications (3)

Publication Number Publication Date
EP2556925A2 EP2556925A2 (fr) 2013-02-13
EP2556925A3 EP2556925A3 (fr) 2014-06-18
EP2556925B1 true EP2556925B1 (fr) 2015-10-14

Family

ID=46754320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12180182.3A Not-in-force EP2556925B1 (fr) 2011-08-12 2012-08-10 Clé à extrémité ouverte à cliquet

Country Status (5)

Country Link
EP (1) EP2556925B1 (fr)
AU (1) AU2012211469B2 (fr)
CA (1) CA2785973C (fr)
SI (1) SI2556925T1 (fr)
TW (1) TWI398324B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI625199B (zh) * 2016-10-11 2018-06-01 Wang shuo feng Universal wrench
TWI720853B (zh) * 2020-03-23 2021-03-01 吳竣賢 可調式扳手

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Publication number Priority date Publication date Assignee Title
FR398253A (fr) * 1909-01-04 1909-06-01 Wilhelm Westebbe Clé anglaise à machoire à ressort
GB191009452A (en) * 1910-04-19 1911-01-19 Frederic William Russell An Improved Adjustable Spanner.
US2537838A (en) * 1946-12-18 1951-01-09 George T Logan Open end ratcheting wrench
US3695125A (en) * 1970-10-06 1972-10-03 Cesco Mfg Corp Open end ratchet wrench
GB1316376A (en) * 1971-08-17 1973-05-09 Insta Snap Corp Open end wrench
US4276790A (en) * 1979-05-16 1981-07-07 Davis Brian L Open-ended wrench having ratcheting action
US4637284A (en) * 1985-09-03 1987-01-20 Rosenbaum Martin J Ratchet-action open-end wrench
US5287777A (en) * 1992-11-03 1994-02-22 Edward Kolodziej Ratcheting open end wrench
US5582082A (en) * 1995-08-10 1996-12-10 Gajo; Alden H. Open-end wrench having self-contained ratcheting mechanism allowing one-way rotational driving of a hardware element
DE19747536B4 (de) * 1997-10-28 2004-06-03 Gernot Hirse Schraubenschlüssel in Gabelschlüsselform
EP0940225A2 (fr) * 1998-03-06 1999-09-08 John L. Stanton Clef à cliquet du type ouverte
TW357114B (en) * 1998-03-06 1999-05-01 John L Stanton Open end ratchet wrench
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CN2393687Y (zh) * 1999-11-11 2000-08-30 陈德芳 滑动塞块装置自调扳手
TWI307652B (en) * 2003-07-22 2009-03-21 Danaher Tool Ltd Retractable open end wrench
US7827887B2 (en) * 2008-10-03 2010-11-09 Kung-Cheng Chen Ratchet wrench
TWI354603B (en) * 2009-11-25 2011-12-21 Proxene Tools Co Ltd Reversible open end wrench having retaining proper
US8342063B2 (en) * 2009-12-23 2013-01-01 Stanton John L Open-ended ratchet wrench
TWM382177U (en) * 2010-01-13 2010-06-11 Proxene Tools Co Ltd Reciprocating open-end wrench having anti-detachment function
TWM386140U (en) * 2010-01-14 2010-08-11 Wei-Chu Chen Pipe wrench structure
TW201124237A (en) * 2010-01-14 2011-07-16 Wei-Chu Chen Pipe wrench.
TW201127558A (en) * 2010-02-12 2011-08-16 Wen-Bin Liu Open end wrench capable of fast reciprocatingly turning
US8402866B2 (en) * 2010-04-30 2013-03-26 Bobby Hu Open end wrench capable of fast driving
TW201139064A (en) * 2010-05-11 2011-11-16 Wen-Bin Liu Fast reciprocatable open-end wrench featuring ultra-high torque
TW201139065A (en) * 2010-05-14 2011-11-16 Wen-Bin Liu Fast reciprocatable open-end wrench
TW201143991A (en) * 2010-06-11 2011-12-16 Wen-Bin Liu Fast open-end wrench capable of fitting screw member
TW201200303A (en) * 2010-06-25 2012-01-01 li-qing Lin Structure of open spanner
TW201242723A (en) * 2011-04-29 2012-11-01 Hou-Fei Hu High-torque quick release reciprocating open-end wrench

Also Published As

Publication number Publication date
EP2556925A2 (fr) 2013-02-13
EP2556925A3 (fr) 2014-06-18
CA2785973A1 (fr) 2013-02-12
AU2012211469A1 (en) 2013-02-28
SI2556925T1 (sl) 2016-01-29
AU2012211469B2 (en) 2014-01-09
TWI398324B (zh) 2013-06-11
CA2785973C (fr) 2014-04-29
TW201307004A (zh) 2013-02-16

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