Patent ID: 8267588

Claim:
A fluid lubrication bearing device comprising: a housing; a bearing sleeve arranged inside said housing; a shaft member inserted inside an inner periphery of said bearing sleeve; a radial bearing portion for supporting said shaft member in a radial direction in a non-contact manner with fluid pressure generated in a radial bearing gap between an inner peripheral surface of said bearing sleeve and an outer peripheral surface of said shaft member; wherein said housing is formed by a process comprising injection molding a resin containing a filling material such that said housing has: a bottom portion formed integrally with said housing, a concave formed in said bottom portion, and a gate mark formed on a bottom surface of said concave of said housing; wherein said gate mark has a cut portion formed at a distal end of said gate mark; and wherein a covering material is provided in said concave to cover the entire said gate mark, including said cut portion at said distal end of said gate mark; and wherein said covering material is positioned higher than said cut portion formed at said distal end of said gate mark.