Appeal No. 1999-0221
Application No. 08/766,847
The appellant's invention is directed to a brake shoe for
disk brakes (claims 1-3 and 9-13) and to a method of
manufacturing a brake shoe (claims 22-35). The subject matter
before us on appeal is illustrated by reference to claim 1,
which reads as follows:
1. A brake shoe for disc brakes, comprising a pad back
plate provided with a friction pad and retaining spring of
spring sheet which, on a side of the pad back plate facing
away from the friction pad, is fixed to the pad back plate,
and wherein a section of the retaining spring intended for
abutment with the pad back plate includes an angular or oval
opening, and a projection molded to the pad back plate and
projecting from the plate plane and protruding through the
opening is riveted to the retaining spring, characterized by
the brake shoe being made by a process including: the
projection of the pad back plate, prior to riveting, is of a
substantially circular cross-section, the diameter of which is
smaller than the smallest width of the opening, wherein the
projection of the pad back plate does not initially occupy, in
form-locking manner, the opening, and the cross-section of the
projection, after riveting, substantially has the form of the
opening and, due to the riveting, is so deformed as to occupy,
in form-locking manner, the opening.
THE REFERENCES
The references relied upon by the examiner to support the
final rejection are:
Feller 3,769,676 Nov. 6,
1973
Gumkowski et al. 4,560,037 Dec. 24,
1985
(Gumkowski)
2
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