Tools – Wrench – screwdriver – or driver therefor – Slidable jaw adjustments
Patent
1998-05-14
2000-02-29
Smith, James G.
Tools
Wrench, screwdriver, or driver therefor
Slidable jaw adjustments
81186, B25B 1316
Patent
active
060295481
ABSTRACT:
An adjustment wrench includes a movable pawl device mounted in an oval head of a wrench body thereof, and an adjustment nut rotated to move the pawl device in and out of a work hole in the oval head so as to hold down or release the workpiece to be turned with the wrench, wherein the oval head of the wrench body has alternatively arranged flat wall portions and teeth within the work hole, the pawl device has a V-shaped chucking head with a V-shaped chuck face for acting with the flat wall portions and teeth on the inside of the oval head of the wrench body to hold down the workpiece to be turned, the V-shaped chucking head having both ends slidably supported on two opposite side walls of the oval head of the wrench body by spring-supported steel balls.
REFERENCES:
patent: 12935 (1855-05-01), Coburn
patent: 1359403 (1920-11-01), Lynds
patent: 2365627 (1944-12-01), Cook
patent: 2376764 (1945-05-01), Flower
patent: 4520699 (1985-06-01), Jeremic
patent: 5415064 (1995-05-01), Chang
patent: 5476024 (1995-12-01), Hsieh
Smith James G.
Thomas David B.
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