US2769360A - Angular wrench head having upwardly opening socket - Google Patents

Angular wrench head having upwardly opening socket Download PDF

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Publication number
US2769360A
US2769360A US455228A US45522854A US2769360A US 2769360 A US2769360 A US 2769360A US 455228 A US455228 A US 455228A US 45522854 A US45522854 A US 45522854A US 2769360 A US2769360 A US 2769360A
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socket
head
heads
handle portion
wrench
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Expired - Lifetime
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US455228A
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Cottrell Wayne Woodford
Edwin E James
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    • 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
    • B25B13/04—Spanners; Wrenches with rigid jaws of ring jaw type

Definitions

  • This invention relates to an improved socket wrench of the double ended type wherein the handle portion between the sockets or socket heads is angulated relative to the heads and the heads are in parallel planes.
  • the primary object of the invention is to provide a Wrench of the character indicated above whose handle portion and whose socket heads are of minimal cross section so as to permit reaching into and operating in conlined and ditticult to reach places, for tightening and loosening nuts on studs, as in the assembling and servicing of aircraft.
  • Another important object of the invention is the provision of a wrench of the character indicated above which has means in its socket heads for holding nuts in the heads while being handled and while being applied to or removed from studs, the said means providing free passage for studs reaching beyond the nuts.
  • a further important object of the invention is to provide a more eflicient and practical wrench of the character indicated above which can be made in a rugged, serviceable and attractive form at relatively low cost.
  • Figure 1 is a side elevation, parts being broken away.
  • Figure 2 is a plan view of Figure 1.
  • Figure 3 is a left-hand end elevation of Figure l, parts being broken away, and
  • Figure 4 is a fragmentary plan view of another embodiment having a twelve point socket instead of a hexagonal socket.
  • the wrench therein illustrated and generally designated 5 comprises a straight, preferably solid bar stock handle portion 6, having straight at parallel upper and lower surfaces 7 and 8, respectively, and straight parallel side edges 9, 9 which are rounded, as indicated at 10 and 11, where the side edges merge into the upper and lower surfaces 7 and 8, respectively.
  • elongated socket heads 12 and 13 which are straight and of the same cross section as the handle portion 6, but are angulated at 45 relative to the handle portion 6 so that the heads extend in directions parallel to each other.
  • the socket heads 12 and 13 have inward ends 14 and 15, respectively, where they join the handle portion 6, and outer ends 16 and 17, respectively, which are semicircular in plan, the outer semicylindrical surfaces of which are disposed at right angles to the longitudinal planes of the heads.
  • the socket heads 12 and 13 have at upper sides 18 and 19, respectively, and at undersides 20 and 21, respectively, the upper and lower sides being parallel to each other.
  • the heads 12 and 13 which have parallel sides 22, 22, are formed similar sockets 23 of hexagonal shape which open through the upper sides 18 and 19 of the heads.
  • the sockets 23 are located as close to the semicircular head ends 16 and 17 as feasible, and the walls of the sockets 23 are as thin as feasible. Because of these arrangements, the heads 12 and 13 can be inserted in spaces not substantially larger than the nuts to be turned.
  • the wrench 5 can be applied either to depending bolt heads or to nuts on depending studs of an assembly without reversing the wrench.
  • the socket heads 12 and 13 are slightly thicker than the depth of the sockets 23 so as to provide retaining walls 24 and 25, at the under sides of the sockets 23, which serve to retain or hold nuts in the sockets while being carried to or away from overlying studs and while being applied to or removed from such overlying studs, the retaining walls being as thin as feasible.
  • each of the retaining walls there are provided central holes 26 and 27, respectively, which are provided to freely pass studs which may project beyond a nut while the wrench is engaged with a nut.
  • the side Walls of the heads 12 and 13 around the sockets 23 will be approximately one-sixteenth of an inch thick.
  • a straight handle portion having parallel side edges and upper and lower sides, an elongated socket head on an end of said handle portion, said head being a continuation of said handle portion and being of similar external size and dimensions as said handle portion, said head being angulated relative to said handle portion away from the lower side of the handle portion, said head having an upper side, a nut socket in said head having an open end opening through the upper side of the head, said head having an underside, and a retaining wall partly closing the other end of the socket.
  • a straight handle portion having parallel side edges and upper and lower surfaces, said handle terminating at one end in an elongated socket head, said head being a continuation of said handle portion and being of the same transverse dimensions as the handle portion, said head being angulated relative to said handle portion toward the upper surface of the handle portion, said head having an upper side, a nut socket in said head having an open end opening through the upper side of the head, said head having an underside, and a retaining wall partly closing the other end of the socket, said head having a terminal end, said terminal end having a semicylindrical periphery and said socket being concentric to and located close to said terminal end, said head having parallel sides and said socket being located close to said opposite sides and deiining socket walls of minimal thickness.

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

Description

Nov. 6, 1956 w. w. COTTRELL `Er A1. 2,769,360
ANGULAR WRENCH HEAD HAVING UPWARDLY OPENING SOCKET Filed sept. 10, 1954- WA Y/vf W. 607725 JNVENTOR.
Afro/amers Patented Nov. 6, 1956 ANGULAR WRENCH HEAD HAVING UPWARDLY OPENING SOCKET Wayne Woodford Cottrell, Torrance, and Edwin Ef This invention relates to an improved socket wrench of the double ended type wherein the handle portion between the sockets or socket heads is angulated relative to the heads and the heads are in parallel planes.
The primary object of the invention is to provide a Wrench of the character indicated above whose handle portion and whose socket heads are of minimal cross section so as to permit reaching into and operating in conlined and ditticult to reach places, for tightening and loosening nuts on studs, as in the assembling and servicing of aircraft.
Another important object of the invention is the provision of a wrench of the character indicated above which has means in its socket heads for holding nuts in the heads while being handled and while being applied to or removed from studs, the said means providing free passage for studs reaching beyond the nuts.
A further important object of the invention is to provide a more eflicient and practical wrench of the character indicated above which can be made in a rugged, serviceable and attractive form at relatively low cost.
Other important objects and advantageous features of the invention will be apparent from the following description and the accompanying drawings, wherein, for purposes of illustration only, a specic embodiment of the invention is set forth in detail.
In the drawings:
Figure 1 is a side elevation, parts being broken away.
Figure 2 is a plan view of Figure 1.
Figure 3 is a left-hand end elevation of Figure l, parts being broken away, and
Figure 4 is a fragmentary plan view of another embodiment having a twelve point socket instead of a hexagonal socket.
Referring in detail to the drawings, wherein like numerals designate like parts throughout the several views, and first to Figures 1 to 3 thereof, the wrench therein illustrated and generally designated 5, comprises a straight, preferably solid bar stock handle portion 6, having straight at parallel upper and lower surfaces 7 and 8, respectively, and straight parallel side edges 9, 9 which are rounded, as indicated at 10 and 11, where the side edges merge into the upper and lower surfaces 7 and 8, respectively.
The opposite ends of the handle portion 5 terminate in elongated socket heads 12 and 13, which are straight and of the same cross section as the handle portion 6, but are angulated at 45 relative to the handle portion 6 so that the heads extend in directions parallel to each other.
The socket heads 12 and 13 have inward ends 14 and 15, respectively, where they join the handle portion 6, and outer ends 16 and 17, respectively, which are semicircular in plan, the outer semicylindrical surfaces of which are disposed at right angles to the longitudinal planes of the heads.
The socket heads 12 and 13 have at upper sides 18 and 19, respectively, and at undersides 20 and 21, respectively, the upper and lower sides being parallel to each other.
In the heads 12 and 13, which have parallel sides 22, 22, are formed similar sockets 23 of hexagonal shape which open through the upper sides 18 and 19 of the heads. The sockets 23 are located as close to the semicircular head ends 16 and 17 as feasible, and the walls of the sockets 23 are as thin as feasible. Because of these arrangements, the heads 12 and 13 can be inserted in spaces not substantially larger than the nuts to be turned.
Since the sockets 23 open through the upper sides 18 and 19 of the heads 12 and 13, respectively, the wrench 5 can be applied either to depending bolt heads or to nuts on depending studs of an assembly without reversing the wrench.
As apparent in Figures 1 and 3, the socket heads 12 and 13 are slightly thicker than the depth of the sockets 23 so as to provide retaining walls 24 and 25, at the under sides of the sockets 23, which serve to retain or hold nuts in the sockets while being carried to or away from overlying studs and while being applied to or removed from such overlying studs, the retaining walls being as thin as feasible.
In each of the retaining walls there are provided central holes 26 and 27, respectively, which are provided to freely pass studs which may project beyond a nut while the wrench is engaged with a nut.
In a wrench in accordance with the present invention for turning three-eights inch nuts, the side Walls of the heads 12 and 13 around the sockets 23 will be approximately one-sixteenth of an inch thick.
In Figure 4 of the drawings is illustrated a socket 23a having twelve points 28a instead of six points 28 in the form of the invention shown in Figures 1 to 3, both wrenches 5 and 5a being otherwise similar.
What is claimed is:
1. In a Wrench, a straight handle portion having parallel side edges and upper and lower sides, an elongated socket head on an end of said handle portion, said head being a continuation of said handle portion and being of similar external size and dimensions as said handle portion, said head being angulated relative to said handle portion away from the lower side of the handle portion, said head having an upper side, a nut socket in said head having an open end opening through the upper side of the head, said head having an underside, and a retaining wall partly closing the other end of the socket.
2. In a wrench, a straight handle portion having parallel side edges and upper and lower surfaces, said handle terminating at one end in an elongated socket head, said head being a continuation of said handle portion and being of the same transverse dimensions as the handle portion, said head being angulated relative to said handle portion toward the upper surface of the handle portion, said head having an upper side, a nut socket in said head having an open end opening through the upper side of the head, said head having an underside, and a retaining wall partly closing the other end of the socket, said head having a terminal end, said terminal end having a semicylindrical periphery and said socket being concentric to and located close to said terminal end, said head having parallel sides and said socket being located close to said opposite sides and deiining socket walls of minimal thickness.
References Cited in the file of this patent UNITED STATES PATENTS D. 120,555 Musselman May 14, 1940 1,072,479 Martindale Sept. 9, 1913 1,384,655 Allmon July 12, 1921 1,424,069 Blackmar July 25, 1922 1,641,252 Dickey Sept. 6, 1927 1,830,143 Taylor Nov. 3, 1931 2,358,555 Blanchard Sept. 19, 1944 2,659,258 Dillard Nov. 17, 1953
US455228A 1954-09-10 1954-09-10 Angular wrench head having upwardly opening socket Expired - Lifetime US2769360A (en)

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Cited By (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4748875A (en) * 1982-05-06 1988-06-07 Lang John W Ratchet box wrench with offset handle
US4819521A (en) * 1982-05-06 1989-04-11 A & E Manufacturing Company Ratchet box wrench with offset handle
US5230263A (en) * 1992-09-08 1993-07-27 Cas Kwaka Wrench for use on threaded parts that are not easily accessible
US5865074A (en) * 1997-03-19 1999-02-02 Hsieh; Chih-Ching Box end wrench with stop means to hold down the bolt or nut to be turned
US5946989A (en) * 1998-06-15 1999-09-07 Hsieh; Chih-Ching Box end for a box end wrench
US6098503A (en) * 1999-02-17 2000-08-08 Hlinka; John A. Stick file wrench
US6116122A (en) * 1999-06-10 2000-09-12 Lien-Sheng; Chen Ratchet tool
US6431031B1 (en) 1999-12-16 2002-08-13 Bobby Hu Reversible ratcheting tool with a smaller head
US6450066B1 (en) 2001-10-19 2002-09-17 Bobby Hu Head of a wrench handle
US6453779B2 (en) 2000-07-21 2002-09-24 Bobby Hu Positioning device for a switch member of a reversible ratchet-type wrench
US6457387B1 (en) 2000-01-11 2002-10-01 Bobby Hu Reversible ratcheting tool with a smaller head and improved driving torque
US6457389B1 (en) 2000-08-22 2002-10-01 Bobby Hu Switching arrangement for a reversible ratchet type wrench
US6520051B1 (en) 2001-12-27 2003-02-18 Bobby Hu Head of a wrench handle
US6539825B1 (en) 2001-09-20 2003-04-01 Yen-Wen Lin Single direction ratcheting wrench with stuck prevention and ratcheting direction indication
US6568299B2 (en) 1999-12-16 2003-05-27 Bobby Hu Reversible ratcheting tool with a smaller head
US6644148B2 (en) 2002-02-08 2003-11-11 Bobby Hu Reversible ratchet-type wrench
US6647832B2 (en) 2001-07-27 2003-11-18 Bobby Hu Wrench having two rigid supporting areas for a pawl
US6666117B2 (en) 2001-07-13 2003-12-23 Bobby Hu Wrench with a fixed maximum operational torque
US6666112B2 (en) 2000-09-01 2003-12-23 Bobby Hu Switching arrangement for a reversible ratchet type wrench
US6701768B2 (en) 2000-06-22 2004-03-09 Hand Tool Design Corporation Process for making ratchet wheels
US6722234B2 (en) 2001-05-14 2004-04-20 Bobby Hu Easy-to-operate and easy-to-assemble ratcheting-type wrench
US6732614B2 (en) 2001-02-19 2004-05-11 Bobby Hu Easy-to-manufacture and easy-to-assemble ratcheting-type wrench
US6745647B2 (en) 2000-11-29 2004-06-08 Mei-Chen Wang Wrench having a universal-joint ratchet wheel
US6758641B2 (en) 2001-07-13 2004-07-06 Bobby Hu Method for manufacturing a ratchet type ring spanner having a larger cavity for receiving a larger pawl
US20040139823A1 (en) * 2000-02-03 2004-07-22 Bobby Hu Biasing arrangement for a pawl of a reversible ratchet-type wrench
US20040139827A1 (en) * 2000-05-25 2004-07-22 Micklich Richard Michael Hand tool for applying torque to a spark plug threaded into a chevrolet V8 engine without removing the exhaust headers
US6807882B2 (en) 2001-05-07 2004-10-26 Bobby Hu Wrench with a simplified structure
US20040231469A1 (en) * 2000-06-22 2004-11-25 David Ling Spanner with prevention of disengagement of fasteners
US20040250659A1 (en) * 2003-06-16 2004-12-16 Lea Way Hand Tool Corporation Gear wrench allowing easy force application
US6945141B2 (en) 2002-04-22 2005-09-20 Bobby Hu Reversible ratchet type wrench
US6955104B2 (en) 2000-03-13 2005-10-18 Bobby Hu Reversible ratcheting tool with a smaller head
US6971286B2 (en) 2002-07-22 2005-12-06 Bobby Hu Ratcheting wrench with quick tightening/loosening functions and fine adjusting functions
US7017453B2 (en) 2001-10-17 2006-03-28 Bobby Hu Reversible ratchet-type wrench
US20060107799A1 (en) * 2004-11-23 2006-05-25 William Hough Ratchet wrench
US7178429B2 (en) 2002-08-05 2007-02-20 Yen-Wen Lin Easy-to-assemble ratcheting tool
US20090165601A1 (en) * 2007-12-26 2009-07-02 Jonathan Douglas Bauman Backup wrench
USRE41260E1 (en) 2001-11-28 2010-04-27 Bobby Hu Retainer ring for securely retaining a first object to a second object
US20100218572A1 (en) * 2009-02-27 2010-09-02 Ingersoll Rand Company U-lock cross brace
US20100326205A1 (en) * 2009-06-26 2010-12-30 Rode John E Systems and methods for preloading a bearing and aligning a lock nut
US20110017024A1 (en) * 2009-11-12 2011-01-27 Meridian International Co., Ltd. Rotary ratchet wrench
USRE43286E1 (en) 1999-08-03 2012-04-03 Bobby Hu Ratchet wheel with asymmetric arcuate concave teeth or non-arcuate concave teeth ratcheting tools with such ratchet wheel and combination of such ratchet wheel and a pawl
US20120181776A1 (en) * 2011-01-19 2012-07-19 Pit Bull Products, Inc. Width adjuster for motorcycle stand
US8359936B2 (en) 2010-10-01 2013-01-29 Rode John E Systems and methods for measuring bearing endplay
US8474330B1 (en) 2012-02-20 2013-07-02 John E Rode Systems and methods for measuring bearing endplay
TWI409143B (en) * 2011-01-14 2013-09-21
US8893364B2 (en) 2012-02-23 2014-11-25 John E. Rode Setting of wheel hub assembly having a spacer therein
US9114509B2 (en) 2012-02-14 2015-08-25 Meridian International Co., Ltd. Rotary ratcheting wrench
US20160101510A1 (en) * 2014-10-14 2016-04-14 Yeo-Ming WANG Integrated wrench structure for preventing departed workpieces
US20170036326A1 (en) * 2015-08-08 2017-02-09 Joseph G. ANGELLO Offset torque drive apparatus and system
US9566699B1 (en) 2005-01-05 2017-02-14 Temper Axle Products Corporation Systems and methods for preloading a bearing and installing a tamper indicating member
US9587667B2 (en) 2005-01-05 2017-03-07 Temper Axle Products Corporation Systems and methods for preloading a bearing and aligning a lock nut
US9599164B1 (en) 2006-01-27 2017-03-21 Temper Axle Products, Corporation Systems and methods for preloading a bearing
USD789169S1 (en) 2016-03-16 2017-06-13 Temper Axle Products Corporation Retaining ring pliers
US9764453B1 (en) 2016-03-16 2017-09-19 Temper Axle Products Corporation Systems and methods for preloading a bearing
US9908223B2 (en) 2016-03-16 2018-03-06 Temper Axle Products Corporation Systems and methods for preloading a bearing and aligning a lock nut
US10086505B2 (en) 2016-05-12 2018-10-02 Temper Axle Products Corporation Systems and methods for preloading a bearing and installing a tamper indicating member
US10100872B1 (en) 2017-04-07 2018-10-16 Templer Axle Products Corporation Systems and methods for preloading a bearing and aligning a lock nut
US10107331B1 (en) 2017-04-07 2018-10-23 Temper Axle Products Corporation Systems and methods for preloading a bearing and aligning a lock nut
US10107324B1 (en) 2017-08-08 2018-10-23 Temper Axle Products Corporation Lock nut with offset retaining ring
US10151343B2 (en) 2017-04-07 2018-12-11 Temper Axle Products Corporation Systems and methods for preloading a bearing and aligning a lock nut
US10690174B2 (en) 2014-03-26 2020-06-23 Temper Axle Products Corporation Systems and methods for preloading a bearing and aligning a lock nut
US10968945B2 (en) 2018-07-02 2021-04-06 Temper Axle Products Corporation Lock nut with rotatably alignable retaining ring
US10974544B2 (en) 2017-04-07 2021-04-13 Temper Axle Products Corporation Systems and methods for preloading a bearing and aligning a lock nut
US10982706B2 (en) 2017-08-08 2021-04-20 Temper Axle Products Corporation Lock nut with adjustable retaining ring
US11235450B2 (en) * 2019-11-18 2022-02-01 Carr Lane Manufacturing Co. Bushing handle
RU223316U1 (en) * 2022-09-30 2024-02-13 Общество Ограниченной Ответственностью "Инновационные Технологии На Железнодорожном Транспорте" (Ооо "Итжт") DOUBLE-SIDED SOCKET WRENCH FOR SERVICING DEVICES OF SIGNALING, CENTROLIZATION AND LOCKING SYSTEMS ON THE RAILWAY

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US1072479A (en) * 1912-12-21 1913-09-09 Frederick Newell Martindale Wrench.
US1384655A (en) * 1920-08-10 1921-07-12 Joseph G Allmon Wrench
US1424069A (en) * 1921-04-22 1922-07-25 Lewis M Blackmar Wrench
US1641252A (en) * 1924-11-01 1927-09-06 Dickey Alexander End wrench
US1830143A (en) * 1930-11-21 1931-11-03 George F Taylor Tool
US2358555A (en) * 1943-07-20 1944-09-19 Beech Aircraft Corp Turnbuckle wrench
US2659258A (en) * 1952-05-20 1953-11-17 Dillard James Bolt-holding box wrench

Cited By (105)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4748875A (en) * 1982-05-06 1988-06-07 Lang John W Ratchet box wrench with offset handle
US4819521A (en) * 1982-05-06 1989-04-11 A & E Manufacturing Company Ratchet box wrench with offset handle
US5230263A (en) * 1992-09-08 1993-07-27 Cas Kwaka Wrench for use on threaded parts that are not easily accessible
US5865074A (en) * 1997-03-19 1999-02-02 Hsieh; Chih-Ching Box end wrench with stop means to hold down the bolt or nut to be turned
US5946989A (en) * 1998-06-15 1999-09-07 Hsieh; Chih-Ching Box end for a box end wrench
US6098503A (en) * 1999-02-17 2000-08-08 Hlinka; John A. Stick file wrench
US6116122A (en) * 1999-06-10 2000-09-12 Lien-Sheng; Chen Ratchet tool
USRE43286E1 (en) 1999-08-03 2012-04-03 Bobby Hu Ratchet wheel with asymmetric arcuate concave teeth or non-arcuate concave teeth ratcheting tools with such ratchet wheel and combination of such ratchet wheel and a pawl
US6431031B1 (en) 1999-12-16 2002-08-13 Bobby Hu Reversible ratcheting tool with a smaller head
US6568299B2 (en) 1999-12-16 2003-05-27 Bobby Hu Reversible ratcheting tool with a smaller head
US20040055423A1 (en) * 2000-01-11 2004-03-25 Bobby Hu Reversible ratcheting tool with a smaller head and improved driving torque
US6457387B1 (en) 2000-01-11 2002-10-01 Bobby Hu Reversible ratcheting tool with a smaller head and improved driving torque
US7234372B2 (en) 2000-01-11 2007-06-26 Bobby Hu Reversible ratcheting tool with a smaller head and improved driving torque
US7237460B2 (en) 2000-02-03 2007-07-03 Bobby Hu Biasing arrangement for a pawl of a reversible ratchet-type wrench
US20040139823A1 (en) * 2000-02-03 2004-07-22 Bobby Hu Biasing arrangement for a pawl of a reversible ratchet-type wrench
US6955104B2 (en) 2000-03-13 2005-10-18 Bobby Hu Reversible ratcheting tool with a smaller head
US20040139827A1 (en) * 2000-05-25 2004-07-22 Micklich Richard Michael Hand tool for applying torque to a spark plug threaded into a chevrolet V8 engine without removing the exhaust headers
US7673542B2 (en) 2000-06-22 2010-03-09 Easco Hand Tools, Inc. Spanner with prevention of disengagement of fasteners
US6701768B2 (en) 2000-06-22 2004-03-09 Hand Tool Design Corporation Process for making ratchet wheels
US20080148907A1 (en) * 2000-06-22 2008-06-26 Easco Hand Tools, Inc. Spanner With Prevention of Disengagement of Fasteners
US7340983B2 (en) 2000-06-22 2008-03-11 Easco Hand Tools, Inc. Spanner with prevention of disengagement of fasteners
US20040231469A1 (en) * 2000-06-22 2004-11-25 David Ling Spanner with prevention of disengagement of fasteners
US6453779B2 (en) 2000-07-21 2002-09-24 Bobby Hu Positioning device for a switch member of a reversible ratchet-type wrench
US6457389B1 (en) 2000-08-22 2002-10-01 Bobby Hu Switching arrangement for a reversible ratchet type wrench
US6666112B2 (en) 2000-09-01 2003-12-23 Bobby Hu Switching arrangement for a reversible ratchet type wrench
US6745647B2 (en) 2000-11-29 2004-06-08 Mei-Chen Wang Wrench having a universal-joint ratchet wheel
US6732614B2 (en) 2001-02-19 2004-05-11 Bobby Hu Easy-to-manufacture and easy-to-assemble ratcheting-type wrench
US6807882B2 (en) 2001-05-07 2004-10-26 Bobby Hu Wrench with a simplified structure
US6722234B2 (en) 2001-05-14 2004-04-20 Bobby Hu Easy-to-operate and easy-to-assemble ratcheting-type wrench
US6666117B2 (en) 2001-07-13 2003-12-23 Bobby Hu Wrench with a fixed maximum operational torque
US6758641B2 (en) 2001-07-13 2004-07-06 Bobby Hu Method for manufacturing a ratchet type ring spanner having a larger cavity for receiving a larger pawl
US6647832B2 (en) 2001-07-27 2003-11-18 Bobby Hu Wrench having two rigid supporting areas for a pawl
US6539825B1 (en) 2001-09-20 2003-04-01 Yen-Wen Lin Single direction ratcheting wrench with stuck prevention and ratcheting direction indication
US7017453B2 (en) 2001-10-17 2006-03-28 Bobby Hu Reversible ratchet-type wrench
US6450066B1 (en) 2001-10-19 2002-09-17 Bobby Hu Head of a wrench handle
USRE41260E1 (en) 2001-11-28 2010-04-27 Bobby Hu Retainer ring for securely retaining a first object to a second object
US6520051B1 (en) 2001-12-27 2003-02-18 Bobby Hu Head of a wrench handle
US6644148B2 (en) 2002-02-08 2003-11-11 Bobby Hu Reversible ratchet-type wrench
US6945141B2 (en) 2002-04-22 2005-09-20 Bobby Hu Reversible ratchet type wrench
US7032478B2 (en) 2002-07-22 2006-04-25 Bobby Hu Ratcheting wrench with quick tightening/loosening functions and fine adjusting functions
US6971286B2 (en) 2002-07-22 2005-12-06 Bobby Hu Ratcheting wrench with quick tightening/loosening functions and fine adjusting functions
US7178429B2 (en) 2002-08-05 2007-02-20 Yen-Wen Lin Easy-to-assemble ratcheting tool
US7093520B2 (en) * 2003-06-16 2006-08-22 Lea Way Hand Tool Corporation Gear wrench allowing easy force application
US20040250659A1 (en) * 2003-06-16 2004-12-16 Lea Way Hand Tool Corporation Gear wrench allowing easy force application
US20060107799A1 (en) * 2004-11-23 2006-05-25 William Hough Ratchet wrench
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