Tools – Wrench – screwdriver – or driver therefor – Machine
Reexamination Certificate
2005-03-01
2005-03-01
Shakeri, Hadi (Department: 3723)
Tools
Wrench, screwdriver, or driver therefor
Machine
C081S057130, C081S057290
Reexamination Certificate
active
06860174
ABSTRACT:
A hand-held power tool for inhibiting uncalled-for rotation of the output shaft and for self-compensating for wear. The tool comprises a housing, a braking member fixedly mounted in the housing and an output shaft mounted in the housing for rotation. The output shaft has an outer end portion for reception of an attachment. A ratchet wheel on the output shaft is adapted to be driven in one direction or the other, has a side face facing a first surface of a wear member, and has a plurality of recesses extending inward from the side face. The wear member is keyed to the output shaft for conjoint rotation. A plurality of engagement members are received one in each recess and biased outward against the first surface to bias a second surface of the wear member against the braking member for holding the ratchet wheel against rotation opposite the driven direction.
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Powers Senniger
S.P. Air Kabusiki Kaisha
Shakeri Hadi
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