Torque limiter wrench and method

Details Torque limiter wrench and method Torque limiter wrench and method

2007-11-14

2010-10-05

Thomas, David B (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Responsive to torque on work

Reexamination Certificate

active

07806027

ABSTRACT:
A limiter torque wrench and method having a handle and a jaw pivotally connected together along an axis and for pivoting of the handle upon applying a quantifiable torque. A cam and spring-loaded follower are interconnected between the handle and the jaw. A ratchet is connected to the cam for return of the cam to a starting position and with minimal torque and after application of the limited torque. There is a second ratchet engagable with a workpiece and a pawl engages the second ratchet and a pusher engages the pawl offset from the axis for optimum engagement force on the engaged pawl.

REFERENCES:
patent: 3893354 (1975-07-01), Knoll
patent: 4019412 (1977-04-01), Kraus et al.
patent: 5337638 (1994-08-01), Coss et al.
patent: 5557994 (1996-09-01), Nakayama
patent: 6742418 (2004-06-01), Amami
patent: 2007/0039432 (2007-02-01), Cutler

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