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:
Sep. 06, 2011
Filed:
Sep. 02, 2009
Koji Hirata, Ehime, JP;
Keigo Kusaka, Ehime, JP;
Takao Yoshitsugu, Ehime, JP;
Yoshihito Watanabe, Ehime, JP;
Hisaaki Yano, Ehime, JP;
Koji Hirata, Ehime, JP;
Keigo Kusaka, Ehime, JP;
Takao Yoshitsugu, Ehime, JP;
Yoshihito Watanabe, Ehime, JP;
Hisaaki Yano, Ehime, JP;
Panasonic Corporation, Osaka, JP;
Abstract
With a hydrodynamic bearing device, a first gap Gis formed between a shaftand a sleeve. A second gap Gis formed between a sleeve capand the sleeve, and holds a lubricant. A thrust bearing memberis disposed near the inner peripheral surface of a center holeof the sleeve cap. A third gap Gis formed between the thrust bearing memberand the sleeve cap, and is open to the atmosphere. A fourth gap Gis formed between the thrust bearing memberand the sleeve. The lubricantcirculates along a circulation passage that includes a communicating path, the first gap Gand the second gap G