Title: Brake shoe for spot-type disc brakes

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Claims: We claim:

1. A brake shoe for spot-type disc brakes, said disc brakes having a brake disc rotating about an axis, said brake disc including an arcuate friction surface having a radially inner and outer edge with respect to said axis, comprising:

a one piece steel backing plate having two lateral faces;

a recess disposed in said backing plate, said recess having radially inner and outer walls with respect to said axis extending toward said disc and between said two lateral faces of said backing plate, each of said inner and outer walls having a different predetermined configuration; and

a friction pad wholly embedded in and fastened to said recess, said pad extending to at least said two lateral faces of said backing plate, said friction pad having radially inner and outer walls with respect to said axis extending toward said disc which contact and conform to said different predetermined configurations of said inner and outer walls of said recess to receive directly from said pad all brake torque exerted on said pad by said disc, said pad being fastened at at least one point to the bottom of said recess by retaining means to retain said pad in said recess without brake torque being exerted on said retaining means;

said configuration of said inner wall of said recess being a first curvature in a first direction; and

said configuration of said outer wall of said recess being a second curvature in the same direction as said first direction;

each of said first and second curvatures having a radius of curvature less than infinity.

2. A brake shoe according to claim 1, wherein

said friction pad is fastened in said recess by a single rivet.

3. A brake shoe according to claim 1, wherein

said friction pad is fastened in said recess by a cold-setting adhesive.

4. A brake shoe according to claim 1, wherein

the side of said friction pad adjacent the bottom of said recess is coated with a self-sealing film.

5. A brake shoe according to claim 1, wherein

said friction pad is fastened in said recess by expanding studs mounted in the surface of said friction pad adjacent the bottom of said recess and resiliently engaging a bore in the bottom of said recess.

Other info:

Inventors: Hahm, Heinz Gunter (Frankfurt am Main, DT)
Pocci, Nedo Igor (Neuenhain, DT)

Application Number: 555914
Filing Date: 1975-03-06
Publication_date: 1976-06-22
Assignee: ITT Industries, Inc. (New York, NY)
Primary Class(es): 188/73.1 188/250G
Other Classes:
US Patent Ref:

2628693	Feb, 1953	Rodger	188/250.
3486589	Dec, 1969	Hillegoss	188/250.
3638764	Feb, 1972	Anders	188/73.

Other Refs: 2,108,2331,136,165

Apr, 1972	FR
Sep, 1962	DT

Primary Examiner: Halvosa, George E. A.
Assistant Examiner:
Attorney: O'Halloran; John T., Lombardi, Jr.; Menotti J., Hill; Alfred C.