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:
May. 06, 1997
Filed:
Mar. 25, 1996
Applicant:
Inventors:
Masamichi Hayakawa, Shimosuwa-machi, JP;
Toshihiro Kobayashi, Shimosuwa-machi, JP;
Kazuya Shimizu, Fujisawa, JP;
Yuusuke Matsumura, Tokyo, JP;
Masuhiro Onoyama, Isehara, JP;
Katsumi Nagano, Chita, JP;
Assignees:
Sankyo Seiki Mfg. Co., Ltd., Nagano, JP;
Taiho Industries Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
508501 ; 252 6252 ; 252 6254 ;
Abstract
A lubricating fluid composition for dynamic pressure bearings which supports the shaft of the bearing by dynamic pressure, wherein the lubricating fluid composition comprises fine magnetic particles dispersed in a base oil solvent which comprises a hydrogenated poly-.alpha.-olefin (PAO) and a polyol ester.