Reversible rachet wrench with integrated dual pawl and spring an

Details Reversible rachet wrench with integrated dual pawl and spring an Reversible rachet wrench with integrated dual pawl and spring an

1991-12-09

1992-12-29

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

81 62, B25B 1346

Patent

active

051741768

ABSTRACT:
A reversible ratchet wrench has a housing containing a ratchet wheel and a reversing pawl unit which includes two pawls respectively connected by leaf springs to a pivotally mounted reversing cam, all in a unitary one-piece construction. The reversing pawl unit is pivotally movable by a reversing lever between first and second conditions, wherein the two pawls respectively engage the ratchet wheel for accommodating rotation thereof in opposite directions. The reversing lever has a cam follower which cammingly engages a cam surface on the housing to resiliently hold the reversing lever in the selected one of its two positions.

REFERENCES:
patent: 1388923 (1921-08-01), Bullard
patent: 2193984 (1940-03-01), Rhinevault
patent: 2701977 (1955-02-01), Stone
patent: 2803980 (1957-08-01), Vogel
patent: 2978081 (1961-04-01), Lundin
patent: 3145594 (1964-08-01), Peters
patent: 3233481 (1966-02-01), Bacon
patent: 3250157 (1966-05-01), Badger
patent: 3356117 (1967-12-01), Wagner

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