Open end ratchet wrench

Details Open end ratchet wrench Open end ratchet wrench

1994-03-29

1995-10-10

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Sliding jaw face

81 911, 81 913, B25B 1312

Patent

active

054561434

ABSTRACT:
An open-end ratchet wrench has a pair of elongated plates that are pivotally mounted to a pair of spaced jaws on the wrench handle and that include at least one elongated surface for engaging a face of a workpiece onto which the jaws are inserted. A spring mounted on the handle biases the elongated plates toward each other so that the elongated plates grasp the workpiece between the elongated surfaces and rotate the workpiece when said handle is rotated in a first direction. The biasing of the spring is overcome when the handle is rotated in a second, opposite direction so that the elongated surfaces of the plates slide over faces of the workpiece (e.g., in a ratcheting manner), allowing the workpiece to remain stationary.

REFERENCES:
patent: 2712259 (1955-07-01), Cowell
patent: 3921474 (1975-11-01), Dyck et al.
patent: 3927582 (1975-12-01), Hertelendy et al.
patent: 4204440 (1980-05-01), Del Prete et al.
patent: 4488459 (1984-12-01), Bailey et al.
patent: 4574665 (1986-03-01), Blachly
patent: 4644830 (1987-02-01), Bailey et al.
patent: 4718315 (1988-01-01), Nitschmann
patent: 4926720 (1990-05-01), Srzanna
Griot's Garage, "Ratchet Flare Nut Wrench," p. 7, Spring, 1994.

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