Gm Global Technolgoy Operations, Inc.

George Lusa

Thomas P Mathues

A disc brake assembly having a spring retainer holding the inner brake shoe assembly to the brake piston and also having a brake lining wear sensor formed as a part of the spring retainer which will engage the rotating disc of the assembly and generate an audible wear warning signal when the brake is actuated and the brake lining of the brake shoe assembly is worn sufficiently to permit such engagement.

Brake shoe assembly retainer and lining wear sensor

A wheel cylinder body is made from a constant cross section extrusion having a bore forming the working chamber of the wheel cylinder without further finishing of the chamber wall. A block-like step section, formed as part of the extrusion on the outside of the cylinder portion, is drilled and threaded for appropriate inlet and bleeder screw connections, and mounting holes. The inlet and bleeder screw holes intersect the bore so that they do not engage the sealing cups of the wheel cylinder pistons during wheel cylinder operation.

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Dayton, OH, United States of America

George Lusa