Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Patent
1991-05-06
1992-08-11
Kisliuk, Bruce M.
Tools
Wrench, screwdriver, or driver therefor
Handle clutched to head
192 44, B25B 1300
Patent
active
051369010
ABSTRACT:
A reversible drive mechanism for socket wrenches, having a detented selector cap thereon. The socket driving post of the wrench is fixedly attached to a triangular shaft rotatably contained within an internal cylindrical bearing surface, creating three arc-shaped spaces. The cylindrical surface is the inner surface of the head of the wrench handle. Each of the surfaces on the triangular shaft has tiltably mounted thereon a U-shaped fixture, which loosely contains within its arms a cylindrical roller. As the selector cap is rotated back and forth between selector positions, each U-shaped fixture tips back and forth on its respective triangular surface, and shifts the contained roller from one side to the other of its respective arc-shaped space. Each roller, when shifted, moves from being closely contained on one side of its arc-shaped space to being closely contained on the other side of its space and, when the wrench handle is rotated, the roller is frictionally wedged between the cylindrical surface and the shaft face, forcing the driving post and a socket mounted thereon in the desired direction.
REFERENCES:
patent: 547386 (1895-10-01), Stewart
patent: 1904621 (1933-04-01), Kounovsky
Cruz Lawrence
Day Jack E.
Kisliuk Bruce M.
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