Torque wrench

Details Torque wrench Torque wrench

1984-01-13

1985-09-17

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 5739, B25B 1300, B25B 1346

Patent

active

045413096

ABSTRACT:
A power torque wrench operated by pulling a flexible tension element tangentially from a drum which is connected through ratchet means to a coaxial driver and having a second tension element wrapped around the drum in the opposite direction so that the work stroke of the motor winds the second tension element around the drum and the return stroke of the motor winds the first tension element around the drum.

REFERENCES:
patent: 2009409 (1935-07-01), Parker
patent: 2603998 (1952-07-01), Schwartz
patent: 2690689 (1954-10-01), Batcha
patent: 3786698 (1974-01-01), Diehl et al.

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