Selective one-way wrench

Details Selective one-way wrench Selective one-way wrench

2005-11-22

2005-11-22

Shakeri, Hadi (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

C192S043200

Reexamination Certificate

active

06966241

ABSTRACT:
A selective one-way wrench includes a head, a spring-biased detent, a pawl, a gear, a transmission element and a switch. The head defines a circular space with a reduced open end, a crescent space communicating with the circular space and a hole communicating with the crescent space. The transmission element includes a protrusion formed on a lower face thereof and a cutout. The transmission element is located in the circular space while the cutout is exposed to the exterior through the reduced open end of the circular space. The spring-biased detent is located in the hole. The pawl includes a plurality of teeth, a groove and a recess. The gear is located in the circular space and the teeth engage the pawl.

REFERENCES:
patent: 6260448 (2001-07-01), Chaconas
patent: 6282993 (2001-09-01), Forman et al.
patent: 6382052 (2002-05-01), Chen
patent: 6386072 (2002-05-01), Yuan-Chin et al.
patent: 6568299 (2003-05-01), Hu
patent: 2002/0162424 (2002-11-01), Hu
patent: 2003/0177872 (2003-09-01), Shu-Ying et al.

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