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:
Dec. 16, 1997
Filed:
Jul. 18, 1996
Applicant:
Inventors:
Natsuhiko Mori, Mie-ken, JP;
Takashi Minami, Kuwana, JP;
Yasuhiro Yamamoto, Kuwana, JP;
Kiyotaka Kusunoki, Shizuoka-ken, JP;
Masakazu Hirata, Mie-ken, JP;
Assignee:
NTN Corporation, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16C / ;
U.S. Cl.
CPC ...
384297 ; 384909 ; 384911 ;
Abstract
A dynamic pressure type bearing comprises a sleeve rotatably holding a shaft driven by a motor composed of a rotor and a stator, one or both of the sleeve and the shaft being made of a resin material. The sleeve and/or shaft of a resin material may have a thin film of oil or grease formed on the surface thereof. Preferably, the resin material has load flexible temperture of 120.degree. C. or more, modules of elasticity or bending of 10 GPa or more, and coefficient of linear expansion of 3.times.10.sup.-5 /.degree.C. or less.