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US3762244A - Speed wrenches - Google Patents

Speed wrenches Download PDF

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Publication number
US3762244A
US3762244A US00157113A US3762244DA US3762244A US 3762244 A US3762244 A US 3762244A US 00157113 A US00157113 A US 00157113A US 3762244D A US3762244D A US 3762244DA US 3762244 A US3762244 A US 3762244A
Authority
US
United States
Prior art keywords
wrench
flat surface
ratio
unit length
angle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00157113A
Other languages
English (en)
Inventor
J Evans
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.)
SPECIALTY TOOLS
SPECIALTY TOOLS INC US
Original Assignee
SPECIALTY TOOLS
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 SPECIALTY TOOLS filed Critical SPECIALTY TOOLS
Application granted granted Critical
Publication of US3762244A publication Critical patent/US3762244A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B25B13/46—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 invention relates generally to open end wrenches, and, more particularly, but not by way of limitation, it relates to improvements in open end wrenches having no moving parts but which have the effective capability of a ratchet-type action.
  • the present invention provides an improved open end wrench of the type having opposed upper and lower jaws formed contiguous with an inner wrench or jaw portion, and which jaw opening is particularly adapted for use with hex head nuts to seize the nut in one direction of turn while moving relatively freely about the nut in the opposite direction of rotation.
  • the upper and lower jaw portions each include a seizing or gripping surface for seizing the nutin the turn direction as well as upper and lower indented portions allowing free movement of the wrench in the opposite or reverse-turn direction.
  • the inner jaw portion is formed to receive two sides of the hex head nut in juxtaposition, and to include a generally circular indentation at the innermost point of the inner jaw portion for the purpose of enabling a free reverse turn action about the nut.
  • ratchet-type wrench capable of long service and good seizer capability for use on hex head nuts, and which has ratchet-type capability and structural profile such that more difficult and tortuous gripping positions are accessible.
  • a wrench 10 consists of a central portion or elongated shaft 12 which is formed to carry at opposite ends a pair of generally circularly shaped flat portions or wrench heads 14 and 16.
  • the wrench head 14 includes polished, flat side surfaces 18 (on each side), and is further formed with a seizing jaw 20.
  • the opposite end wrench head 16 includes polished flat surfaces which enable the unique action of the invention.
  • the seizing jaw 20 includes an upper jaw portion 26 and a lower jaw portion 28, each of which have their general contacting surfaces aligned along the respective arrow lines 30 and 32 generally parallel to shaft 12.
  • An inner jaw portion 34 is formed with opposite inner faces 36 and 38 (see also FIG. 2) as formed contiguously at a joining angle of 120 at an angle apex point 40.
  • An additional concave portion or recess 42 of generally circular disposition about apex 40 is formed in the inner jaw portion 34.
  • the recess 42 is disposed generally concentrically to apex 40 to provide a manipulating space 44 which will allow freedom of reverse-turn movement of the wrench head 14 relative to a nut 46, i.e.
  • the wrench opening 20 as defined by upper jaw portion 26, lower jaw portion 28 and inner jaw portion 34 is formed by a series of flat and arcuate configurations optimumly located thereabout.
  • a flat surface 50 is formed between a front point 52 and a point 54 along the upper jaw portion 26.
  • the flat surface 50 is formed generally parallel to the elongated shaft 12 of wrench l0 and essentially parallel to the opposite gripping surfaces of seizing jaw 20.
  • a concave, arcuate surface 56 is then formed from point 54 proceeding inward of seizing jaw 20 to a'point 58.
  • a flattened portion 60 of arcuate surface 56 is formed so that it extends from point 58 at an angle of about 40 relative to flat surface 50, as .indicated by the angle indicator are 62.
  • a short flat surface 64 then extends inward along seizing jaw 20 from point 58 at an angle of approximately 235 to a point 66 which joins to the inner jaw portion 34.
  • the flat surface 36 of inner jaw portion 34 is formed to extend from point 66 at an angle of approximately l00, extending toward apex point 40, but actually joining the central arcuate portion 42 at a point 68.
  • the arcuate surface 42 is formed concave around apex point 40 to define a space 44, and to join flat surface 38 at a point 70 which, in turn, extends to a point 72.
  • the flat surfaces 36 and 38 are arrayed of an angle of the angular relationship of adjacent sides of a hexhead nut.
  • the lower jaw portion 28 consists of those surfaces extending from end point 74 inwardly to point 72 of wrench head 14.
  • a flat surface 76 extends from point 72 to a point 78, flat surface 76 being aligned at an angle of about 126 relative to flat surface 38.
  • flat surface 76 dips by about 6, as shown by angle indicator are between points 74 and 84.
  • a concave surface 86 is then formed between points 78 and 84.
  • the concave surface 86 is formed with the innermost side being of steepest angle as is indicated by the angle indicator 88.
  • Approximate ratios of the lengths of the surfaces are substantially as follows, taking the surface 64 as unit length (arcuate openings being denoted by width and depth):
  • wrench be formed of the harder metals and various hardening processes may be employed in final formation and manufacture of the wrenches.
  • the wrench 10 may be formed such that the upper wrench end 16 includes a similar opening configuration yet being dimensioned for a smaller or larger size hex head nut; or, it may be desired in some cases to include the same size nut capabilities with a different formation of jaw opening at wrench head 16 for the purpose of enabling turning of a different type of nut.
  • The-manner and size divisions in making up the sets of wrenches in accordance with thepresent invention will depend upon exigencies surrounding particular applications.
  • the wrench 10 can be inserted around the nut 46 in the manner as shown in FIG. 2 and it is in the position to grip nut 46 and exert clockwise turning power thereto.
  • a speed wrench of the open end type having an elongated shaft and a seizing jaw opening defined by upper and lower jaw portions and an inner jaw portion extending therebetween, said wrench comprising:
  • a flat surface 50 originating at the front edge of said upper jaw portion and extending inwardly of said jaw opening in a direction substantially parallel to the axis of said jaw opening and at a small angle to said elongated shaft;
  • an arcuate concave surface 56 having one end intersecting said flat surface 50, and having a width ratio of approximately 3 and a depth ratio of approximately 1.5 relative to a unit length;
  • a flat surface 64 having one end intersecting the proximate end of said arcuate concave surface 56 at about 220 to 240, said flat surface 64 having a length which is said unit length;
  • a vflat surface 36 having one end intersecting the proximate end of said surface 64 and forming an angle of from about to about the length of said'surface 36 being such that it has a ratio of approximately 3.4 to said unit length and terminating at a point 68;
  • flat surface 76 having one end intersecting the proximate end of said arcuate concave surface 86 and forming an angle with said arcuate concave surface of from about 205 to about 215, said flat surface 76 having a length such that its ratio to the unit length is about 1.6;
  • an arcuate concave surface 42 intersecting innermost points 68 and 70 of respective surfaces 36 and 38 and being generally concentric with an apex point 40, formed at a projected intersection of surfaces 36 and 38, to define a space 44 about the major angle at the intersection of the projection of surfaces 36 and 38, said arcuate concave surface 42 having a width ratio of about 2 and adepth ratio of about 0.8 relative to the unit length.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
US00157113A 1971-06-28 1971-06-28 Speed wrenches Expired - Lifetime US3762244A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15711371A 1971-06-28 1971-06-28

Publications (1)

Publication Number Publication Date
US3762244A true US3762244A (en) 1973-10-02

Family

ID=22562374

Family Applications (1)

Application Number Title Priority Date Filing Date
US00157113A Expired - Lifetime US3762244A (en) 1971-06-28 1971-06-28 Speed wrenches

Country Status (8)

Country Link
US (1) US3762244A (it)
AT (1) AT335935B (it)
CH (1) CH563217A5 (it)
DE (1) DE2231588C3 (it)
FR (1) FR2143814B1 (it)
GB (1) GB1398778A (it)
IT (1) IT958634B (it)
SE (1) SE384809B (it)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4222293A (en) * 1978-10-18 1980-09-16 Columbus Mckinnon Corporation Bi-directional wrench
US4776244A (en) * 1986-06-16 1988-10-11 Snap-On Tools Corporation Open-end wrench
US4889020A (en) * 1987-08-31 1989-12-26 Baker David R Open end ratchet type wrench
US5551322A (en) * 1989-07-11 1996-09-03 Snap-On Technologies, Inc. Speed wrench
EP0793562A1 (en) * 1994-11-21 1997-09-10 William M. Pradelski Ratchetable open-ended wrench
USD420264S (en) * 1998-10-22 2000-02-08 Ching Chen Wrench
US6055890A (en) * 1997-03-06 2000-05-02 Lim; Byeong-Hak Spanner or monkey spanner to which a force to only one direction
USD431764S (en) * 1999-01-15 2000-10-10 Ying Wen Pai Wrench
US6289772B1 (en) * 2000-07-27 2001-09-18 Pai Ying-Wen Speed wrench
US20060266164A1 (en) * 2005-05-31 2006-11-30 Hua Gao Open-ended ratcheting wrench having adjusting mechanism
US20100175513A1 (en) * 2009-01-12 2010-07-15 Lin Da-Sen Wrench
US20110030515A1 (en) * 2009-08-10 2011-02-10 Jonard Industries Corp. Speed wrench including an angled offset
USD863008S1 (en) * 2017-10-13 2019-10-15 Ty-Flot, Inc. Wrench with slot
USD910411S1 (en) 2017-10-13 2021-02-16 Pure Safety Group, Inc. Combination tool attachment device
US20210046617A1 (en) * 2019-08-15 2021-02-18 Robert Doroslovac Adaptable wrench for damage fastener engagement head
US11135702B2 (en) * 2018-07-30 2021-10-05 Hong Ann Tool Industries Co., Ltd. Tool adapted to be driven rapidly
USD957903S1 (en) * 2020-07-22 2022-07-19 Yue Jei Industrial Co., Ltd. Wrench
USD957904S1 (en) * 2020-07-22 2022-07-19 Yue Jei Industrial Co., Ltd. Wrench
USD958620S1 (en) * 2020-03-18 2022-07-26 Infar Industrial Co., Ltd. Tool handle
US11504826B2 (en) * 2019-06-19 2022-11-22 Hong Ann Tool Industries Co., Ltd. Quick-turning wrench
USD1015837S1 (en) * 2021-08-19 2024-02-27 Hong Ann Tool Industries Co., Ltd. Wrench

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2735711B1 (fr) * 1995-06-23 1997-09-12 Facom Cle cliquetante pour entrainer un organe a tete hexagonale, notamment une vis ou un ecrou
FR2752183B1 (fr) * 1996-08-12 1998-10-16 Simplet Serge Cle plate a commande de rotation alternative et manuelle
DE29619599U1 (de) * 1996-10-30 1997-07-03 Eduard Wille Gmbh & Co, 42349 Wuppertal Maulschlüssel
US6158309A (en) * 1998-10-21 2000-12-12 David Baker, Inc. Double-drive double-lock ratcheting wrench
DE10020379C1 (de) * 2000-04-26 2002-01-24 Hirse Patent Lizenz Gmbh Ratschengabelschlüssel
TWI468260B (zh) * 2012-08-07 2015-01-11 Infar Ind Co Ltd 防潰角開口快轉扳手（二）

Citations (1)

* 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

Patent Citations (1)

* 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

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4222293A (en) * 1978-10-18 1980-09-16 Columbus Mckinnon Corporation Bi-directional wrench
US4776244A (en) * 1986-06-16 1988-10-11 Snap-On Tools Corporation Open-end wrench
US4889020A (en) * 1987-08-31 1989-12-26 Baker David R Open end ratchet type wrench
US5551322A (en) * 1989-07-11 1996-09-03 Snap-On Technologies, Inc. Speed wrench
EP0793562A1 (en) * 1994-11-21 1997-09-10 William M. Pradelski Ratchetable open-ended wrench
EP0793562A4 (en) * 1994-11-21 1998-03-11 William M Pradelski OPEN TIGHTENING RATCHET WRENCH
US6055890A (en) * 1997-03-06 2000-05-02 Lim; Byeong-Hak Spanner or monkey spanner to which a force to only one direction
USD420264S (en) * 1998-10-22 2000-02-08 Ching Chen Wrench
USD431764S (en) * 1999-01-15 2000-10-10 Ying Wen Pai Wrench
US6289772B1 (en) * 2000-07-27 2001-09-18 Pai Ying-Wen Speed wrench
US20060266164A1 (en) * 2005-05-31 2006-11-30 Hua Gao Open-ended ratcheting wrench having adjusting mechanism
US20100175513A1 (en) * 2009-01-12 2010-07-15 Lin Da-Sen Wrench
US20110030515A1 (en) * 2009-08-10 2011-02-10 Jonard Industries Corp. Speed wrench including an angled offset
US8266988B2 (en) 2009-08-10 2012-09-18 Jonard Industries Corp Speed wrench including an angled offset
USD863008S1 (en) * 2017-10-13 2019-10-15 Ty-Flot, Inc. Wrench with slot
USD910411S1 (en) 2017-10-13 2021-02-16 Pure Safety Group, Inc. Combination tool attachment device
US11135702B2 (en) * 2018-07-30 2021-10-05 Hong Ann Tool Industries Co., Ltd. Tool adapted to be driven rapidly
US11504826B2 (en) * 2019-06-19 2022-11-22 Hong Ann Tool Industries Co., Ltd. Quick-turning wrench
US20210046617A1 (en) * 2019-08-15 2021-02-18 Robert Doroslovac Adaptable wrench for damage fastener engagement head
US11583980B2 (en) * 2019-08-15 2023-02-21 Bgd Unlimited, Llc Adaptable wrench for damage fastener engagement head
USD958620S1 (en) * 2020-03-18 2022-07-26 Infar Industrial Co., Ltd. Tool handle
USD957903S1 (en) * 2020-07-22 2022-07-19 Yue Jei Industrial Co., Ltd. Wrench
USD957904S1 (en) * 2020-07-22 2022-07-19 Yue Jei Industrial Co., Ltd. Wrench
USD1015837S1 (en) * 2021-08-19 2024-02-27 Hong Ann Tool Industries Co., Ltd. Wrench

Also Published As

Publication number Publication date
FR2143814B1 (it) 1973-07-13
AT335935B (de) 1977-04-12
GB1398778A (en) 1975-06-25
DE2231588C3 (de) 1979-05-17
IT958634B (it) 1973-10-30
ATA557672A (de) 1976-07-15
DE2231588B2 (de) 1978-09-28
DE2231588A1 (de) 1973-01-18
SE384809B (sv) 1976-05-24
CH563217A5 (it) 1975-06-30
FR2143814A1 (it) 1973-02-09

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