Robust wrench

Details Robust wrench Robust wrench

2006-08-01

2006-08-01

Wilson, Lee D. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

C081S063100

Reexamination Certificate

active

07082859

ABSTRACT:
A wrench includes a handle, a clutch, a detent, a controller, a gear and a C-ring. The handle includes an annular head defining a circular space, a pothole not overlapping the circular space, a channel for communicating the circular space with the pothole, a recess and an annular groove both defined in a wall of the circular space. The clutch includes two claws put in the recess and a spring put between the claws. Each of the claws includes a toothed face and a rod. The claws can easily be put into the recess since the rods can be moved through the channel. A controller is put rotationally in the pothole for moving the rods. The gear is put in the circular space. The gear includes a toothed face for engagement with the toothed face of one of the claws. The C-ring includes an external edge put in the annular groove, an internal edge for retaining the annular gear in the circular space and a gate projecting from an upper face for blocking the channel.

REFERENCES:
patent: 2201705 (1940-05-01), Stone
patent: 2201827 (1940-05-01), Froeschl et al.
patent: 4561329 (1985-12-01), Lack
patent: 5174176 (1992-12-01), Krivec
patent: 5178047 (1993-01-01), Arnold et al.
patent: 6382051 (2002-05-01), Chang
patent: 6539825 (2003-04-01), Lin
patent: 6691594 (2004-02-01), Chen
patent: 2004/0055422 (2004-03-01), Lin
patent: 2004/0261584 (2004-12-01), Huang

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