Metal working – Method of mechanical manufacture – Repairing
Patent
1992-09-03
1993-12-14
Eley, Timothy V.
Metal working
Method of mechanical manufacture
Repairing
29239, 29256, 29259, 29266, B23P 600, B29C 7300
Patent
active
052690539
ABSTRACT:
A compact disc brake piston retraction tool and method for retracting a disc brake piston is provided for moving a disc brake piston into a retracted position in the cylinder position in the cylinder bore of a disc brake caliper in order to allow the replacement of worn disc brake pads. The tool includes a threaded bolt, and a threaded collar, which bolt-collar assembly can operate alone or be attached to a brace support wall to enable the invention to be braced against the caliper arms opposite the brake piston to allow pressure to be exerted on the disc brake piston by the rotation of the collar around the threaded bolt thereby causing the bolt-collar assembly to lengthen and exert pressure against the disc brake piston by a variety of means such as directly, by a piston bearing plate, or a brake pad attached to the brake piston. The present invention can use a brace support wall or omit it and, can either use a piston bearing plate and/or collar journal collar end cap to transfer the pressure to the disc brake piston to force the piston back into the cylinder bore. Methods of using the invention are also provided.
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Eley Timothy V.
Martin C. Richard
Rowe Jasper C.
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