Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Patent
1979-12-26
1981-03-31
Jones, Jr., James L.
Tools
Wrench, screwdriver, or driver therefor
Handle clutched to head
B25B 1346
Patent
active
042585953
ABSTRACT:
A ratchet wrench usable where limited access normally requires an open end wrench, but which has the high torque capacity of a closed end socket wrench is disclosed. A pair of semicircular socket holders are releasably coupled to each other by a straight ratchet bar assembly for movement from a fully retracted, closed position to an extended, open position. A curved, semiconductor bore is formed transversely through each socket holder, with a recessed counterbore forming a semicircular guide chanel in each holder concentric with the transverse bore. First and second socket segments are received in rotational engagement with the guide channels of the first and second socket holders, respectively. Each socket segment includes a curved head having lands which in combination define a polygonal wrench opening. A curved ratchet carried by each socket segment is received in overlapping engagement with an exterior planar face of each socket holder. A pawl mechanism mounted on at least one of the socket holders is resiliently biased into engagement with the teeth of the curved ratchet, thereby allowing it to turn in one direction only, and preventing rotation of the ratchet in the opposite direction.
REFERENCES:
patent: 1153694 (1915-09-01), Knox
patent: 1168480 (1916-01-01), Collier
patent: 1314964 (1919-09-01), Kennedy
patent: 2445969 (1948-07-01), Powell
patent: 2446776 (1948-08-01), Matson
patent: 2757564 (1956-08-01), Reaves
patent: 2758493 (1956-08-01), Goldwater
patent: 2982162 (1961-05-01), Golden
patent: 4123953 (1978-11-01), Corbacho
patent: 4130032 (1978-12-01), Giandomenico et al.
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