Patent ID: 6039156
Filing Date: 2000-03-21
Classification: F16D

Abstract:
A disc brake assembly for a vehicle adapted to selectively frictionally engage a rotor connected to a vehicle wheel comprising:an anchor plate adapted to be secured to a stationary component of the vehicle;a pin extending from said anchor plate and including an outer surface;a slide pin bushing disposed about said pin and including an inner surface and an outer surface, said inner surface provided with at least a pair of spaced apart inner contacting surfaces which are spaced apart from one another by a groove said inner contacting surfaces engaging said outer surface of said pin, said inner contacting surfaces of said slide pin bushing having a roughened surface finish defined by a plurality of generally rounded depressions provided therein, said plurality of rounded depressions extending into said inner contacting surfaces of said slide pin bushing;a caliper having an opening formed therein, said outer surface of said slide pin bushing extending within said opening such that said caliper is supported for sliding movement relative to said anchor plate;a pair of brake pads carried by said disc brake assembly; andmeans for selectively moving said brake pads toward and away from one another so as to be adapted to selectively frictionally engage the rotor;wherein said plurality of rounded depressions formed in said inner contacting surfaces of said slide pin bushing is effective to reduce the surface contact area between said inner contacting surfaces of said slide pin bushing and said outer surface of said pin to thereby reduce the frictional forces therebetween during sliding movement of said caliper and thereby provide a smoother sliding action of said caliper during actuation of the disc brake assembly.