Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Reexamination Certificate
2007-03-14
2008-11-04
Meislin, D. S (Department: 3723)
Tools
Wrench, screwdriver, or driver therefor
Handle clutched to head
C192S043200
Reexamination Certificate
active
07444904
ABSTRACT:
A ratchet mechanism for a ratchet tool includes a pawl received in a recess of the head and biased by a bead which is biased by a spring received in a notch defined in an inner periphery of the recess. The pawl has a toothed surface which is matched with outer threaded surface of a driving wheel which is rotatably received in a through hole of the head. A receiving hole is defined through the pawl and opens a top surface of the pawl. A peripheral groove is defined radially outward in an inner periphery of the receiving hole. A shift member has a top board and a rod which extends from an underside of the top board, a stop is connected to a distal end of the rod. The stop and the rod are inserted into the receiving hole and the stop is movably engaged with the peripheral groove.
REFERENCES:
patent: 5794496 (1998-08-01), Arnold
patent: 6516691 (2003-02-01), Wei
patent: 7017453 (2006-03-01), Hu
patent: 2003/0019334 (2003-01-01), Wei
patent: 2003/0070512 (2003-04-01), Hu
Meislin D. S
Rosenberg , Klein & Lee
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