Torque indication device for hand tools

Details Torque indication device for hand tools Torque indication device for hand tools

2006-07-04

2006-07-04

Wilson, Lee D. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Responsive to torque on work

C081S478000, C081S483000

Reexamination Certificate

active

07069827

ABSTRACT:
A torque indication device for a hand tool includes a handle with a processing unit connected thereto and a head having a driving member connected thereto is rotatably connected to the handle. The head has an insertion which is inserted into an axial recess of the handle. A first notch is defined in a distal end of the insertion. An intermediate member has a second notch defined in a first end thereof and a second end of the intermediate member is a flat surface. A bead is engaged with the first and second notches. A spring is received in the axial recess and a first sensor is clamped between a first end of the spring and the flat surface. A second sensor is clamped between a second end of the spring and an inside of the axial recess. The first and second sensors are electrically connected with the processing unit.

REFERENCES:
patent: 6345436 (2002-02-01), Codrington
patent: 6463834 (2002-10-01), Kemp et al.
patent: 6722235 (2004-04-01), Hsieh
patent: 6799480 (2004-10-01), Walsh et al.
patent: 7000508 (2006-02-01), Li et al.
patent: 7013769 (2006-03-01), Chen

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