The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 2003
Filed:
Oct. 18, 2001
Applicant:
Inventors:
Shoichi Saito, Hachioji, JP;
Hiromichi Sakano, Hachioji, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 3/206 ; F16C 3/374 ;
U.S. Cl.
CPC ...
F16C 3/206 ; F16C 3/374 ;
Abstract
A hydrodynamic bearing device of a shaft, a sleeve rotatably supporting this shaft, wherein a herringbone groove is formed at a predetermined part of an inner periphery wall face of the sleeve, and, a thrust receiver supporting a thrust side of the shaft fixed to a lower face of the sleeve, thereby sealing predetermined lubricant, wherein a spiral groove which is narrower in groove width and shallower in depth than the herringbone groove, and which is oriented to the thrust receiver in a rotation direction of the shaft, is formed on inner periphery wall face of the sleeve.