CA2134689A1 - Cam Drive Mechanism - Google Patents

Cam Drive Mechanism

Info

Publication number
CA2134689A1
CA2134689A1 CA2134689A CA2134689A CA2134689A1 CA 2134689 A1 CA2134689 A1 CA 2134689A1 CA 2134689 A CA2134689 A CA 2134689A CA 2134689 A CA2134689 A CA 2134689A CA 2134689 A1 CA2134689 A1 CA 2134689A1
Authority
CA
Canada
Prior art keywords
drive
driven member
rollers
larger diameter
bore
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
CA2134689A
Other languages
French (fr)
Other versions
CA2134689C (en
Inventor
Wayne C. Duncan
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
Priority to CA002134689A priority Critical patent/CA2134689C/en
Publication of CA2134689A1 publication Critical patent/CA2134689A1/en
Application granted granted Critical
Publication of CA2134689C publication Critical patent/CA2134689C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • B25B17/00—Hand-driven gear-operated wrenches or screwdrivers

Landscapes

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

Abstract

A reversible gearless drive mechanism for a socket wrench comprises a driven member having an upper centering support flange and a lower centering support race, between which is a cam-like area around the circumference defining three symmetrically opposite bi-directional ramps. The driven member is axially centered within a drive member defining a round cylindrical bore, between which each bi-directional ramp forms one right hand wedge and one left hand wedge. Between each two bi-directional ramps are two cylindrical rollers held apart into their respective left hand and right hand wedges by a leaf spring. The cammed circumference of the driven member does not contact the inner circumference of the bore for centering support permitting the use of larger diameter rollers relative to the diameter of the bore in which the mechanism is centered.
The larger diameter rollers combined with the pressure of the leaf springs provide adequate friction drag to hold the driven member stationary while a thumb operated rotary selector switch overcomes a spring and pin detente to unwedge either the three left hand or the three right hand rollers to change the direction of drive. This permits a change in drive directions with only one available hand. The larger diameter rollers also provide a more positive lock for the drive and are more tolerant to small particles and imperfections caused from wear or contamination.
CA002134689A 1994-10-18 1994-10-18 Cam drive mechanism Expired - Fee Related CA2134689C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002134689A CA2134689C (en) 1994-10-18 1994-10-18 Cam drive mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002134689A CA2134689C (en) 1994-10-18 1994-10-18 Cam drive mechanism

Publications (2)

Publication Number Publication Date
CA2134689A1 true CA2134689A1 (en) 1996-04-19
CA2134689C CA2134689C (en) 1998-02-24

Family

ID=4154563

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002134689A Expired - Fee Related CA2134689C (en) 1994-10-18 1994-10-18 Cam drive mechanism

Country Status (1)

Country Link
CA (1) CA2134689C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004018155A1 (en) * 2002-08-21 2004-03-04 Xact-Design & Engineering Pty Ltd Torque transmission mechanism
WO2016145491A1 (en) * 2015-03-16 2016-09-22 Kevin Dein A reversible wrench
CN113370123A (en) * 2021-06-26 2021-09-10 安徽蒂森五金工具有限公司 Toothless silent bidirectional adjustable wrench

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004018155A1 (en) * 2002-08-21 2004-03-04 Xact-Design & Engineering Pty Ltd Torque transmission mechanism
WO2016145491A1 (en) * 2015-03-16 2016-09-22 Kevin Dein A reversible wrench
EP3271113A4 (en) * 2015-03-16 2018-12-05 Kevin Dein A reversible wrench
RU2702535C2 (en) * 2015-03-16 2019-10-08 Кевин ДАЙН Reversible switch
CN113370123A (en) * 2021-06-26 2021-09-10 安徽蒂森五金工具有限公司 Toothless silent bidirectional adjustable wrench

Also Published As

Publication number Publication date
CA2134689C (en) 1998-02-24

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed