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:
Mar. 14, 2006
Filed:
Dec. 01, 2003
Keigo Kusaka, Ozu, JP;
Daisuke Itou, Neyagawa, JP;
Hiroaki Saito, Takatsuki, JP;
Takafumi Asada, Hirakata, JP;
Yasuhiro Asaida, Kyoto, JP;
Keigo Kusaka, Ozu, JP;
Daisuke Itou, Neyagawa, JP;
Hiroaki Saito, Takatsuki, JP;
Takafumi Asada, Hirakata, JP;
Yasuhiro Asaida, Kyoto, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A fluid dynamic bearing device including a shaft having an interior pressure regulating hole by which a center portion of a thrust surface confronting a thrust plate and a lubricant pool portion of an inner circumferential surface of a sleeve are communicated with each other. Thus, the device is capable of obtaining stable thrust floating characteristics and preventing leaks of the lubricant as well as exhaustion of the lubricant.