Tools – Wrench – screwdriver – or driver therefor – Rigid jaws
Patent
1999-04-27
2000-10-31
Scherbel, David A.
Tools
Wrench, screwdriver, or driver therefor
Rigid jaws
811247, 811772, 811779, 403157, 403161, B25B 1300, B25B 2316
Patent
active
061385336
ABSTRACT:
A wrench apparatus includes a wrench head with a swivel adapter, a combination handle and extension bar attachable to the swivel adapter, and a ratchet head. The wrench head includes a tubular member with a longitudinal slot, and an internal C-shaped brace dividing the tubular member into two sockets at opposite ends thereof. One socket includes six sides and five points and the other socket includes twenty sides and ten points, so that both sockets can securely grip all six sides of a nut or bolt. The points of one socket are offset radially relative to the points on the other socket for providing smaller increments in repositioning freedom. The swivel adapter pivotally attached between a pair of ears on the wrench head by a removable pin, so that it can be removed and attached between a like pair of ears on the ratchet head. The extension bar includes a female end with a faceted outer surface that prevents it from rolling on a slanted surface, and also enables the extension bar to be gripped and turned by a conventional wrench. In an alternative embodiment, the sockets have fully closed sides, and are divided by an annular brace therebetween.
REFERENCES:
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patent: 2774259 (1956-12-01), Caulkins
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patent: 2886998 (1959-05-01), Scott
patent: 3121356 (1964-02-01), Davis
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patent: 3270597 (1966-09-01), Neff et al.
patent: 3383962 (1968-05-01), Harris
patent: 4184783 (1980-01-01), Hall
patent: 5280740 (1994-01-01), Ernst
patent: 5522287 (1996-06-01), Chiang
Danganan Joni B.
Scherbel David A.
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