Ratchet wrench

Details Ratchet wrench Ratchet wrench

1988-08-29

1990-04-03

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

81 584, 81 58, C25B 1300

Patent

active

049130099

ABSTRACT:
An inexpensive ratchet wrench primarily consisting of stamped metal parts having a head pivotally mounted upon an elongated handle. A torque transfer member utilizing ratchet teeth is rotatably mounted upon the head and a detent fixed upon an end of the handle selectively engages the ratchet teeth as the head pivots relative to the handle during torqueing and return handle movements. Stop means interposed between the head and handle limit relative pivotal movement therebetween, and a spring imposes a biasing action on the head biasing the head in a direction engaging the torque transfer member ratchet teeth with the handle detent.

REFERENCES:
patent: 1425816 (1922-08-01), Van Horn
patent: 1668222 (1928-05-01), Troha
patent: 2696748 (1954-12-01), Relken
patent: 2796790 (1957-06-01), Wiltsey et al.
patent: 3255647 (1966-06-01), Gray

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