Screwdriver assembly and method with torque measuring scale

Details Screwdriver assembly and method with torque measuring scale Screwdriver assembly and method with torque measuring scale

2006-06-06

2006-06-06

Wilson, Lee D. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Responsive to torque on work

C081S467000, C081S473000

Reexamination Certificate

active

07055415

ABSTRACT:
A screwdriver having a handle and a scale for measuring torque transmitted to a screw and having a beam-type spring for transmitting the screwing torque. The handle and spring have a lost-motion connection therebetween, and there is limit stop in that connection. The handle is sealed against the entry of debris. The method of making the screwdriver is also disclosed.

REFERENCES:
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patent: 2400978 (1946-05-01), Collins
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patent: 3403551 (1968-10-01), Agostini
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patent: 4249435 (1981-02-01), Villeneuve
patent: 4641538 (1987-02-01), Heyraud
patent: 5048381 (1991-09-01), Allen et al.
patent: 5535867 (1996-07-01), Coccaro et al.
patent: 6575042 (2003-06-01), Rinner

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