Ratchet wrench with three operative positions

Details Ratchet wrench with three operative positions Ratchet wrench with three operative positions

2011-05-10

2011-05-10

Meislin, D. S. (Department: 3727)

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

Reexamination Certificate

active

07938042

ABSTRACT:
A ratchet wrench includes a head (11) having a through-hole (13) rotatably receiving a drive member (20). Two pawls (30) are pivotably received in two compartments (21) in the drive member (20). Each pawl (30) includes first teeth (31) on a first end (60) thereof and second teeth (32) on a second end (62) thereof. Each pawl (30) includes first second, and third positioning faces (351, 352, 353) on an inner side (64) thereof. A control member (40) is rotatably received in the drive member (20) and movable between first, second, and third operative positions to change the driving direction of the ratchet wrench. The center (C) of the third positioning face (353) of each pawl (30) is not coincident to the center of the inner side (64) of the pawl (30).

REFERENCES:
patent: 2772763 (1956-12-01), Johnson
patent: 3372612 (1968-03-01), Rozmus
patent: 3467231 (1969-09-01), Haznar
patent: 4445404 (1984-05-01), Parker
patent: 4491043 (1985-01-01), Dempsey et al.
patent: 4589307 (1986-05-01), Parker
patent: 4765449 (1988-08-01), Peters
patent: 5537899 (1996-07-01), Diedrich
patent: 5983757 (1999-11-01), Blise et al.
patent: 6076433 (2000-06-01), Lynch
patent: 6125722 (2000-10-01), Hopper et al.
patent: 6209422 (2001-04-01), Kamiya et al.
patent: 6311584 (2001-11-01), Chu
patent: 6457386 (2002-10-01), Chiang
patent: 6752048 (2004-06-01), Chiang
patent: 7111527 (2006-09-01), Lee
patent: 235541 (1994-12-01), None
patent: 373543 (1999-11-01), None
patent: 399509 (2000-07-01), None
patent: 524174 (2003-03-01), None
patent: 589241 (2004-06-01), None

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