Appeal No. 1998-1533 Page 24
Application No. 08/411,202
Claim 1 is anticipated by Feldmann. We read claim 1 on
Feldmann as follows: A disc brake assembly having a pair of
brake shoes (two of Feldmann's segments 1, 8, 9) each with a
friction pad member (one of Feldmann's pads 2, 3, 4, 5 on each
segment) to be pressed into contact with a disc rotor
(Feldmann's rotor 16) having a circumferential length secured
for rotation with a road wheel of an automotive vehicle,
wherein upon contact with the brake shoes, the disc rotor
oscillates at a three-nodes diametric mode, wherein each
friction pad member of said brake shoes has an upper portion
with a total width determined to be less than substantially
1/12 of the circumferential length of said disc rotor at a
position where said rotor is brought into frictional
engagement with the upper portion of said friction pad member
(each of Feldmann's pads 2, 3, 4, 5 on each segment has a
total width less than 1/12 of the circumferential length of
the rotor at a position where the rotor is brought into
frictional engagement with the upper portion of each pad) so
that the friction pad member reduces oscillation frequencies
of said disc rotor so that occurrence and level of brake
noises noticeably decrease.
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