Torque wrench

Details Torque wrench Torque wrench

2006-09-26

2006-09-26

Meislin, Debra S (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Responsive to torque on work

C081S483000

Reexamination Certificate

active

07111532

ABSTRACT:
A torque wrench includes a driving shank received in a handle and having an intermediate portion pivotally attached to the handle with a pivot axle, and having two projections, a follower is slidably received in the handle and biased to engage with the driving shank by a spring biasing member, and two guiding members are fitted and retained between the driving shank and the handle and each includes a groove for slidably receiving the projections of the driving shank, and thus to stably guide the inner end of the driving shank to rotate and to move within the handle and to prevent the driving shank from being tilted or swung or vibrated relative to the handle. The grooves of the guiding members include a center of curvature located at the pivot axle of the driving shank and the handle.

REFERENCES:
patent: 2732747 (1956-01-01), Livermont
patent: 2996940 (1961-08-01), Hoose
patent: 4467678 (1984-08-01), Lindholm
patent: 4732062 (1988-03-01), Grabovac et al.
patent: 4870879 (1989-10-01), Shieh
patent: 5152200 (1992-10-01), Kaplan
patent: 5497682 (1996-03-01), Hsu
patent: 6334377 (2002-01-01), Wu
patent: 6722235 (2004-04-01), Hsieh
patent: 6742418 (2004-06-01), Amami

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