Wrench with inclined drive faces

Details Wrench with inclined drive faces Wrench with inclined drive faces

1991-11-12

1993-08-31

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Jaw faces

81119, 81179, B25B 1300

Patent

active

052398994

ABSTRACT:
A wrench for driving a nut utilizes curved drive faces. The drive faces are convex and protrude inward toward a center line between the jaw portions. Notches are formed on each drive face near the free end. One wrench is adjustable, having a positioner that pushes the nut outward as the movable jaw closes. The positioner maintains the nut in a position in contact with the curved drive surfaces.

REFERENCES:
patent: 1434753 (1922-11-01), Shackford
patent: 2671368 (1954-03-01), Diebold
patent: 2685219 (1954-08-01), Diebold
patent: 3000245 (1961-09-01), Orr
patent: 3242775 (1966-03-01), Hinkle
patent: 4011778 (1977-03-01), Delin
patent: 4214491 (1980-07-01), Martinmaas
patent: 4765211 (1988-08-01), Colvin
patent: 4787277 (1988-11-01), Myers
patent: 4833949 (1989-05-01), Piperkovski
patent: 4848193 (1989-07-01), Wylie, III
patent: 5018412 (1991-05-01), Wylie, III

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