Torque adjustable tool

Details Torque adjustable tool Torque adjustable tool

2006-04-25

2006-04-25

Thomas, David B. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

C081S473000

Reexamination Certificate

active

07032476

ABSTRACT:
A torque adjustable tool includes an active member and a passive member which is removably connected to the active member by two respective clutch portions. Driving power is connected to the active member and the passive member outputs a torque. A spring is mounted to the passive member and biased between an inner periphery of a control member mounted to the passive member and an enlarged portion of the passive member. The control member includes a clamping portion to which a locking member is threadedly mounted. By operating the locking member, the clamping portion can be clamped inward to be securely mounted to the passive member as one piece so as to completely transfer the torque from the driving power, or the clamping portion is opened outward such that the passive member can output a torque that is less than the force applied by the spring.

REFERENCES:
patent: 2707893 (1955-05-01), Bohnet
patent: 2968979 (1961-01-01), Aijala
patent: 3695059 (1972-10-01), Laubach
patent: 3942337 (1976-03-01), Leonard et al.
patent: 4272973 (1981-06-01), Fu-Tsai
patent: 4901610 (1990-02-01), Larson et al.
patent: 6128984 (2000-10-01), Haupt
patent: 6155147 (2000-12-01), Dzieman
patent: 6339977 (2002-01-01), Lee et al.
patent: 6640674 (2003-11-01), Rinner et al.
patent: 6799480 (2004-10-01), Walsh et al.
patent: 6832533 (2004-12-01), Huang

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