Pawl for ratchet wrench

Details Pawl for ratchet wrench Pawl for ratchet wrench

1999-03-04

2000-10-24

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

81 632, B25B 1346

Patent

active

061349917

ABSTRACT:
A pawl for use in a ratchet wrench having a ratchet gear in an opening and the pawl in a communicating pawl opening. A detent ball and spring are in a bore in the wrench communicating with the pawl opening. A relief surface is formed on each side surface of the pawl extending from the front surface of the pawl toward the back surface. The front surface of the pawl has an intermediate surface having opposite ends forming teeth. A tooth is formed on the approximate mid-point of the intermediate portion. The back face of the pawl has two pockets separated by a center ridge. Each pocket has a ramp near the center ridge, each ramp joins a concave portion. A furrow is formed in at least one pocket extending from the bottom surface of the pawl to a point opposite the bore for the detent spring such that the detent ball may be introduced into the furrow and directed into the bore. A spacing hub is formed on the pawl to minimize friction between the pawl and the cover plate.

REFERENCES:
patent: 3824881 (1974-07-01), Wright
patent: 4261233 (1981-04-01), Konecny
patent: 4485700 (1984-12-01), Colvin
patent: 4631988 (1986-12-01), Colvin
patent: 5000066 (1991-03-01), Gentiluomo
patent: 5076121 (1991-12-01), Fosella
patent: 5178047 (1993-01-01), Arnold et al.
patent: 5522288 (1996-06-01), Slusar et al.
patent: 5957009 (1999-09-01), McCann

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