Patent ID: 6206146
Filing Date: 2001-03-27
Classification: F16D

Abstract:
A disc brake assembly having a pair of brake shoes each with a friction pad member to be pressed into contact with a disc rotor 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 so that the friction pad member reduces oscillation frequencies of said disc rotor so that occurrence and level of brake noises noticeably decrease,wherein each friction pad member comprises a pair of laterally spaced friction pads respectively formed in an approximately trapezoidal shape, wherein the outer sides of each friction pad are formed as an oblique side having an upper outermost end, and wherein a distance between said upper outermost opposite ends of each pair of said friction pads is determined to be less than substantially 1/12 of the circumferential length of said disc rotor.