Patent ID: 6125007
Filing Date: 2000-09-26
Classification: F16C,G11B

Abstract:
A bearing seal assembly adapted for fitting within a confined axial space for enabling small angle oscillations of an oscillating arm, said seal assembly comprising:an outer bearing raceway defining one boundary of said confined space;an inner bearing raceway mounted concentric with said outer raceway;an annular elastic membrane having structure and configuration of a selected one of (a) molded with multiple orthogonal sinusoidal dimples extending in line both radially and circumferentially of said membrane and (b) a substantially planar configuration stretched in plane isotopically in tension throughout said membrane before being attached to said inner and outer raceways, said membrane having an inner peripheral edge sealingly secured to said inner raceway, and an outer peripheral edge sealingly secured to said outer raceway, said membrane having no torsional strain at a neutral position of said inner raceway and said outer raceway, and said membrane having a structure and configuration for enabling predetermined limited relative oscillation between said inner raceway and said outer raceway with minimum torque and with minimum axial distortion of said membrane within said axial space.