Dual-pawl full engagement reversible ratchet wrench

Details Dual-pawl full engagement reversible ratchet wrench Dual-pawl full engagement reversible ratchet wrench

1999-08-10

2000-08-15

Scherbel, David A.

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

81 631, B25B 1346

Patent

active

061019011

ABSTRACT:
A reversible ratchet wrench utilizing two pawls that mesh with teeth inside a housing. The design allows for engagement of all the teeth on a pawl with all the teeth in the housing. The invention provides for reduced stress on the individual teeth of the pawl as compared with a traditional reversible ratchet wrench. Smaller components of less expensive material may subsequently be utilized, allowing for a reduction in housing size.
Both a round head reversible ratchet wrench and a pear head reversible ratchet wrench are contemplated. The wrenches of the present invention share several common components. Interchangeability is desirable due to the reduction in required components, and the reduced costs associated therewith.

REFERENCES:
patent: 4491043 (1985-01-01), Dempsey et al.
patent: 4765449 (1988-08-01), Peters
patent: 4807500 (1989-02-01), Main
patent: 5058463 (1991-10-01), Wannop
patent: 5477757 (1995-12-01), Maresh
patent: 5568751 (1996-10-01), Lee

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