Tools – Wrench – screwdriver – or driver therefor – Rigid jaws
Patent
1990-11-13
1993-06-15
Meislin, D. S.
Tools
Wrench, screwdriver, or driver therefor
Rigid jaws
811243, 811244, 811778, B25B 1306
Patent
active
052188914
ABSTRACT:
The double-ended reversible box wrench for use with a hexagonal fastener includes two box wrenching heads interconnected by a handle shank, with each head having a double-hexagonal socket opening therethrough, each of the outwardly directed corners of which has an axis extending through the center of the socket opening. One socket has a corner inclined at an offset angle of 33/4 degrees to the shank axis and the other socket has a corner inclined at an offset angle of 111/4 degrees to the shank axis so that, by sequential application of the four wrench faces to a hexagonal fastener, the fastener maybe repeatedly rotated in the same direction while the wrench undergoes a swing of no more than 71/2 degrees during any one application. A wrench with offset angles of zero degrees and 10 degrees and a pivoting head wrench are also disclosed.
REFERENCES:
patent: 493051 (1893-03-01), Aberg
patent: 964067 (1910-07-01), Steen
patent: 1261565 (1918-04-01), Leitner
patent: 1643814 (1927-09-01), Peterson
patent: 1764990 (1930-06-01), Schultz
patent: 2951405 (1960-09-01), Engquist
patent: 4327611 (1982-05-01), Catanese et al.
"Armstrong Tools", catalog 57, Dec. 1957, pp. 53, 58, 60, 61, and 72.
Olson Gene E.
Pagac William T.
Meislin D. S.
Snap-on Tools Corporation
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