Wrench capable of counting the number of times its torque...

Details Wrench capable of counting the number of times its torque... Wrench capable of counting the number of times its torque...

2006-05-23

2006-05-23

Shakeir, Hadi (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Responsive to torque on work

C073S862230, C081S481000

Reexamination Certificate

active

07047849

ABSTRACT:
A wrench includes a pipe, a lever, a first wedge, a second wedge, an elastic element, a counter and a sensor. The lever includes a portion put in and pivotally connected with the pipe. The first wedge is attached to the portion of the lever. The second wedge is in contact with the first wedge. The elastic element biases the second wedge against the first wedge. The counter is installed on the pipe. The sensor signals the counter every time it senses movement of the first wedge past the second wedge.

REFERENCES:
patent: 3140623 (1964-07-01), Van Hoose
patent: 3577815 (1971-05-01), Bergquist
patent: 4969105 (1990-11-01), Gaenssle
patent: 5537877 (1996-07-01), Hsu
patent: 6463834 (2002-10-01), Kemp et al.
patent: 6655242 (2003-12-01), Gambarini
patent: 3421212 (1985-12-01), None

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