Torque indicating wrench

Details Torque indicating wrench Torque indicating wrench

1999-08-06

2000-08-29

Eley, Timothy V.

Tools

Wrench, screwdriver, or driver therefor

Responsive to torque on work

81479, B25B 23142

Patent

active

061091502

ABSTRACT:
A torque applying and indicating wrench is comprised of a pawl with a torque sensing end for both ratcheting, and direct sensing of torque during application. The torque sensing end is bifurcated into a cantilevered flexing beam and an optional reference beam. The flexing beam engages one or more ratchet teeth from a ratchet wheel contained in the wrench head of an elongated tool body. Torque is then transduced and indicated either mechanically or electronically.

REFERENCES:
patent: 2715333 (1955-08-01), Larson
patent: 2934946 (1960-05-01), Engquist
patent: 3747423 (1973-07-01), Mitchell
patent: 3895517 (1975-07-01), Otto
patent: 4958541 (1990-09-01), Annis et al.
patent: 5337638 (1994-08-01), Coss et al.
patent: 5368480 (1994-11-01), Balfour et al.
patent: 5557994 (1996-09-01), Nakayama
patent: 5597113 (1997-01-01), Ray, Sr.
patent: 5734113 (1998-03-01), Vogt et al.

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