Gear-operated ratchet wrench

Details Gear-operated ratchet wrench Gear-operated ratchet wrench

1977-04-13

1978-06-20

Jones, Jr., James L.

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

81 90C, 811778, B25B 1346

Patent

active

040954943

ABSTRACT:
A wrench for working in areas of greatly limited access includes a head having a bore extending through it, a handle secured to the head, a socket for engagement with an object to be rotated, and gear teeth spaced apart circumferentially around the outside surface of the socket. The head is split and hinged to pivot between an open position for expanding the effective size of the bore and a closed position for extending around the gear teeth of the socket when the latter is inserted in the bore. A spring-biased locking mechanism locks the hinged portion of the head in its closed position during use. The locking mechanism is releasable to allow the head to pivot to its open position. A reversible ratchet pawl engages the gear teeth to provide reversible, unidirectional rotation of the socket relative to the head.

REFERENCES:
patent: 2758493 (1956-08-01), Goldwater
patent: 2982162 (1961-05-01), Golden
patent: 3186265 (1965-06-01), Wenturine et al.
patent: 3383962 (1968-05-01), Harris

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