Ratchet wrench

Details Ratchet wrench Ratchet wrench

2007-12-17

2010-06-29

Thomas, David B (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle or shank

Reexamination Certificate

active

07743685

ABSTRACT:
A ratchet wrench includes a handle having two spaced pivoting walls, two through holes respectively formed through the pivoting walls, and an inner threaded section provided at one of the through holes with a length shorter than the total length of the through hole. A ratchet head has a pivoting portion disposed between the pivoting walls of the handle and a pivoting hole through two opposite sides of the pivoting portion. A screw runs through the through holes of the handle and the pivoting hole of the ratchet head and is threaded with the inner threaded section of the handle. An urging member is disposed in an accommodation chamber of the ratchet head and sleeved onto the screw with two ends thereof stopped against a periphery wall of the accommodation chamber of the ratchet head and the pivoting wall of the handle.

REFERENCES:
patent: 2978938 (1961-04-01), Nalley
patent: 6557442 (2003-05-01), Owoc
patent: 7424839 (2008-09-01), Chiang

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