EP0122179A2 - Schraubensteckschlüssel - Google Patents

Schraubensteckschlüssel Download PDF

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Publication number
EP0122179A2
EP0122179A2 EP84400514A EP84400514A EP0122179A2 EP 0122179 A2 EP0122179 A2 EP 0122179A2 EP 84400514 A EP84400514 A EP 84400514A EP 84400514 A EP84400514 A EP 84400514A EP 0122179 A2 EP0122179 A2 EP 0122179A2
Authority
EP
European Patent Office
Prior art keywords
socket
yoke
wrench
curved
handle member
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.)
Withdrawn
Application number
EP84400514A
Other languages
English (en)
French (fr)
Other versions
EP0122179A3 (de
Inventor
James G. Furey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0122179A2 publication Critical patent/EP0122179A2/de
Publication of EP0122179A3 publication Critical patent/EP0122179A3/de
Withdrawn legal-status Critical Current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
    • B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
    • B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
    • B25B13/463—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis a pawl engaging an externally toothed wheel

Definitions

  • the invention generally relates to ratchet wrench construction and more specifically to improvements to ratchet wrenches of the socket type usable in areas of limited access normally limiting wrench use to the open-ended type.
  • a closed-end or socket wrench is preferred for use in making or breaking a high torque union.
  • the open-ended wrench may be used by merely reversing of the wrench position with each turn. The wrench, of course, must be inserted, turned, removed, and then reinserted. This action is both time-consuming and difficult if the element is not turned the proper amount.
  • the principal object of the present invention to provide a ratchet wrench having a split ring-like socket head which can be positioned around a nut or bolt head to permit the wrench to be moved into torque transmitting engagement with the wrench lands of a nut or bolt head and thereafter operated as a closed box ratchet wrench for making or breaking a union.
  • Another object of the invention is to provide a ratchet wrench with an expandable yoke which permits the wrench to be moved into torque transmitting engagement with the socket head by means of movement of the wrench handle transverse to the socket axis in areas of limited access which preclude movement of the wrench handle longitudinal to the socket access until th yoke telescopically receives the socket.
  • Yet another object of the invention is to provide a high strength split ring-like socket assemb for use in a ratchet wrench which socket assembly permit circumferential engagement of a nut through movement of the socket transverse to the socket axis.
  • Yet another object of the invention is to provide a ratchet wrench having a split ring-like socket which is readily removable and interchangeable with other similar sockets to permit the wrench to be used in combination with nuts or bolt heads of a variety of standard drive head configurations.
  • a ratchet wrench assembly in which a split ring-like socket is rotatably journalled with the yoke portion of a ratchet wrench.
  • a handle member terminates in an expandable yoke portion containing a fixed upper half and an expandable lower half for movement from an expanded open position for receiving a socket through movement transverse to the socket axis to a closed position in engagement with the socket.
  • a curved rib is formed transversely on the inner surface of each yoke half.
  • a split ring-like nut driving socket contains exterior ratchet teeth and a circular bore formed transversely through the socket with a recessed counter bore forming a circular guide channel in the socket concentric with the transverse bore.
  • the socket guide channel is receivec in rotational engagement with the curved ribs of the yoke halves.
  • the socket contains a curved head having lands which in combination define a polygonal wrench opening.
  • a pawl mechanism mounted on the wrench handle member is resiliently biased into engagement with the ratchet teeth of the socket, thereby allowing it to turn in one direction only and preventing rotation of the socket in the opposite direction.
  • a high torque expandable socket ratchet wrench assembly constructed according to the teachings of the invention is identified generally by the reference numeral 10.
  • the principal components of the ratchet wrench assembly include an elongated handle member 12 which is connected at one end by an expandable yoke assembly 14 having a fixed top half 16 and an expandable bottom half 18, as shown in Figs. 2 and 3.
  • the yoke halves are coupled for expansion and contraction between open and closed positions by means of resiliently biased retaining screws 20 and detent gear assembly 22.
  • Received in rotational coupling engagement with the upper and lower yoke halves is split ring-like socket assembly 24.
  • the socket assembly 24 comprises a pair of complemental substantially semi-circular members 26, 28 coupled by means of pin 36.
  • Each socket member includes a curved head 30 having interior land wrench surfaces 32 which in combination define a polygonal opening 34.
  • each socket member include a circular bore 38 which is intersected by a counter bore 40 having a recessed inner side wall 42 defining a curved guide channel.
  • the curved rib 44 of each yoke i half is journalled for rotation in the guide channel 42.
  • Each guide channel and rib are preferably rectangular in cross section and extend along a semi-circular path.
  • this overlapping, journalled engagement of the socket guide channel and yoke rib produces an interlocking engagement of the wrench yoke and socket resulting in a stable structure having a high torque transmitting capacity.
  • each yoke member Secured to each yoke member is a curved ratchet 44, 46 which in combination define a continuous ratchet wheel as best seen in Fig. 6.
  • Each curved ratchet includes a series of teeth 48 for engaging a pawl 50 carried on the fixed yoke member 16.
  • socket member 28 contains a single tooth member 54 which extends beyond the plan of side wall planar surface 56 for mating engagement into the recess 58 of socket member 26 created by the absence of a single ratchet tooth member. This mating of socket members 26 and 28 produces an interleaved engagement resulting in a structure having a high stable closed bond.
  • the pawl 50 is resiliently biased by means of spring 58 and ball- bearing 60 with the teeth 44 of socket 24.
  • the pawl 50 is pivotally mounted and anchored in place by spring retainer 62.
  • a selector switch 64 permits indexing of the pawl 50 so as to permit ratcheting in either a clockwise or counterclockwise direction.
  • yoke halves 16 and 18 are coupled together by means of resiliently biased retaining screws 20 and springs 66 for movement from a closed position in engagement with socket 24 as shown in Fig. 3 to an expanded position for engaging the socket member.
  • the yoke halves are maintained in open position by means of a plunger 22 and detent gear 70.
  • the compression springs 66 resiliently bias yoke halves 16, 18 into closed position.
  • yoke half 18 Upon depression of plunger 22, yoke half 18 is displaced a given distance of sufficient width to engage socket member 24 and is held in expanded position as shown in Fig. 5 by means of detent gear 70 which operates in similar fashion to a conventional ballpoint pen.
  • detent gear 70 which operates in similar fashion to a conventional ballpoint pen.
  • handle member 12 is moved transverse to the socket axis so as to engage socket member 24 previously positioned about a given nut or bolt head by means of movement transverse to the nut of bolt head axis.
  • yoke half 18 Upon subsequent depression of plunger 22, yoke half 18 is caused to be returned to its original closed position by means of biasing springs 66, thus achieving interlocking engagement with socket member 24.
  • a socket member is comprised of semidisc-shaped elements 62 and 64, each formed with rectangular - shaped outwardly extending continuous toothed or serrated sections 66 with upper and lower conically-shaped surfaces 68 and 70, respectively referring specifically to Figure 8.
  • Each of the elements 62 and 64 are formed with three rectangularly-shaped surface; 102 disposed at an angle of 120° to each other about a major axis of the socket member 60 thereby defining therebetween a hexagon for positioning of the socket member 60 about a hexagonally-formed stud (not shown).
  • the upper and lower conically-shaped are dimensioned to cooperate with the upper and lower inner walls formed on the wrench (not shown).
  • each of the elements 62 and 64 comprisinc the socket member 60 is formed with a hinge portion and referring to Figure 10, the element 62 is formed with a lower hinge portion 74 including an orifice 76 whereas the element 64 is formed with an upper hinge portion 78 including a pin 80 which cooperates with the orifice 76 in the lower hinge portion 74 of the element 64 Opposite the hinge portions 74 and 76 of the elements 62 and 64, respectively, there are formed interlocking arm members 82 and 84, respectively, which cooperate to form an integral socket member 60, particularly when positioned within the socket wrench assembly 10 when the yoke members are in a closed position.
  • the expandable ratchet wrench of the present invention provides a high torque capacity ratchet assembly which may be quickly and easily utilized in situations requiring a ratchet or a closed box end wrench in areas of limited access.
  • the provision of the interleaved yoke rib and socket channel combination strengthens and stabilizes the the wrench structure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP84400514A 1983-03-14 1984-03-14 Schraubensteckschlüssel Withdrawn EP0122179A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US47536183A 1983-03-14 1983-03-14
US475361 1995-06-07

Publications (2)

Publication Number Publication Date
EP0122179A2 true EP0122179A2 (de) 1984-10-17
EP0122179A3 EP0122179A3 (de) 1986-01-22

Family

ID=23887235

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84400514A Withdrawn EP0122179A3 (de) 1983-03-14 1984-03-14 Schraubensteckschlüssel

Country Status (2)

Country Link
EP (1) EP0122179A3 (de)
CA (1) CA1216180A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004091946A2 (en) * 2003-04-10 2004-10-28 The Ohio State University Shock absorber system adjustment device
GB2446857A (en) * 2007-02-20 2008-08-27 John Cocker Split socket kit
US8607671B2 (en) 2010-08-06 2013-12-17 American Grease Stick Company Wrench with trigger

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2636411A (en) * 1951-03-09 1953-04-28 Weldon A Wood Open end ratchet wrench
FR1029033A (fr) * 1950-12-04 1953-05-29 Forges Stephanoises Sa Des Clef à cliquet avec inversement de marche
US4258595A (en) * 1979-12-26 1981-03-31 Ramsey Marvin L High torque sectional socket ratchet wrench
US4374479A (en) * 1980-12-11 1983-02-22 Minotti Peter L Torque transfer device for wrench applications
FR2520654A1 (fr) * 1982-02-03 1983-08-05 Vromman Michel Outillage pour le vissage ou le devissage de pieces difficilement accessibles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1029033A (fr) * 1950-12-04 1953-05-29 Forges Stephanoises Sa Des Clef à cliquet avec inversement de marche
US2636411A (en) * 1951-03-09 1953-04-28 Weldon A Wood Open end ratchet wrench
US4258595A (en) * 1979-12-26 1981-03-31 Ramsey Marvin L High torque sectional socket ratchet wrench
US4374479A (en) * 1980-12-11 1983-02-22 Minotti Peter L Torque transfer device for wrench applications
FR2520654A1 (fr) * 1982-02-03 1983-08-05 Vromman Michel Outillage pour le vissage ou le devissage de pieces difficilement accessibles

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004091946A2 (en) * 2003-04-10 2004-10-28 The Ohio State University Shock absorber system adjustment device
WO2004091946A3 (en) * 2003-04-10 2004-12-09 Univ Ohio State Shock absorber system adjustment device
GB2446857A (en) * 2007-02-20 2008-08-27 John Cocker Split socket kit
GB2446857B (en) * 2007-02-20 2011-06-01 John Cocker Split socket kit
US8607671B2 (en) 2010-08-06 2013-12-17 American Grease Stick Company Wrench with trigger

Also Published As

Publication number Publication date
CA1216180A (en) 1987-01-06
EP0122179A3 (de) 1986-01-22

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): DE FR GB IT SE

PUAL Search report despatched

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Effective date: 19860714

17Q First examination report despatched

Effective date: 19870521

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19880614