Patent ID: 6364532
Filing Date: 2002-04-02
Classification: F16C

Abstract:
A bearing comprising:(a) a rotating shaft; (b) a sleeve which surrounds an outer wall of said rotating shaft and supports said rotating shaft in such a manner that said rotating shaft is rotatable; and (c) a thrust bearing plate which is fixed to said sleeve and supports one end of said rotating shaft, wherein a first herringbone pattern and a second herringbone pattern are formed on one of said rotating shaft and said sleeve, wherein said first herringbone pattern is located at a first side and said second herringbone pattern is located at a second side, wherein the first side is a side where said thrust bearing plate is located, and the second side is a side opposite the first side, wherein a relation between width-A and width-B in said first herringbone pattern is expressed by 0Aâˆ’B)<0.2x(A+B) where A denotes a dimension from a turning point of said first herringbone pattern to an end thereof in the first side, and B denotes a dimension from the turning point to an end thereof in the second side,and, a relation between width-C and width-D in said second herringbone pattern is expressed by 0Dâˆ’C)<0.2x(D+C) where C denotes a dimension from a turning point of said second herringbone pattern to an end thereof in the first side, and D denotes a dimension from the turning point to an end thereof in the second side.