Ratchet screw driver

Details Ratchet screw driver Ratchet screw driver

1998-06-15

1999-11-02

Scherbel, David A.

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

81 58, 192 432, B25B 1346

Patent

active

059749156

ABSTRACT:
A ratchet driving mechanism includes a gear rotatably engaged in a housing. A pair of pawls are disposed in the opening and biased to engage with the gear by a U-shaped spring member. A pair of partitions are engaged with the gear and the spring member and the pawls for retaining the elements in place. A control ferrule is rotatably secured to the housing and includes a plate having an actuator extended between the pawls for acting on the pawls and for controlling the driving directions of the gear. The U-shaped spring member may be easily engaged into the housing.

REFERENCES:
patent: 2720296 (1955-10-01), Briglia
patent: 5575192 (1996-11-01), Eggert
patent: 5582081 (1996-12-01), Lin
patent: 5685204 (1997-11-01), Braun
patent: 5687820 (1997-11-01), Lin

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