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:
Oct. 22, 1991
Filed:
Aug. 16, 1990
Applicant:
Inventors:
Michiharu Naka, Odawara, JP;
Hideki Koizumi, Chigasaki, JP;
Yukari Kondoh, Fujisawa, JP;
Hirotugu Kinoshita, Kawasaki, JP;
Mokoto Seikiya, Takarazuka, JP;
Masaru Mishima, Kawasaki, JP;
Assignees:
Nippon Seiko Kabushiki Kaisha, both of, JP;
Nippon Oil Co., Ltd., both of, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
252 333 ; 252 39 ; 252 407 ; 252 / ; 252 / ;
Abstract
A grease composition for a high speed anti-friction bearing contains, in a synthetic lubricant base oil, (A) 2 to 30 wt. % of a thickening agent consisting of an urea comopund, (B) 0.2 to 30 wt. % of sorbitan monooleate, (C) 0.2 to 3.0 wt.% of barium sulfonate, and (D) 0.2 to 3.0 wt. % of barium lanolate, as indispensable components, each weight percentage being based on the total weight of the composition.