Double drive open-end wrench

Details Double drive open-end wrench Double drive open-end wrench

1998-10-21

2000-12-05

Banks, Derris H.

Tools

Wrench, screwdriver, or driver therefor

Rigid jaws

811243, B25B 1302

Patent

active

061551414

ABSTRACT:
An wrench for use with a nut which protects the nut from damage as torque is applied and can drive the nut in two drive positions. The wrench of this invention has a head having an upper forward drive face opposed to a lower drive face and an upper rearward drive face adjacent to the upper forward drive face. An upper notch separates the upper forward drive face and the upper rearward drive face. There is a back stop face adjacent to the upper rearward drive face. The lower drive face is adapted to engage a first side of a nut, the upper rearward drive face is adapted to engage an opposed second side of the nut, and the back stop face is adapted to engage a corner of the nut when the wrench is in a primary drive position. The upper forward drive face is adapted to engage the first side of the nut, the upper notch is adapted to engage a nut corner adjacent to the first side, and the lower drive face is adapted to engage the second side when the wrench is in a secondary drive position.

REFERENCES:
patent: 4889020 (1989-12-01), Baker
patent: 5117714 (1992-06-01), Pagac et al.
patent: 5131312 (1992-07-01), Macor
patent: 5239899 (1993-08-01), Baker
patent: 5381710 (1995-01-01), Baker
patent: 5406868 (1995-04-01), Foster

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