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:
Jun. 19, 1990
Filed:
Oct. 11, 1989
Applicant:
Inventor:
Motohiro Miyasaka, Kashiwa, JP;
Assignee:
Hitachi Powdered Metals Co., Ltd., Matsudo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
75231 ; 75243 ; 75247 ; 420496 ;
Abstract
A wear-resistant copper-base sintered oil-containing bearing material having a structure which contains 2 to 11 % by weight of tin and 1 to 20 % by weight of cobalt and further includes 2 to 15 % by weight of at least one of molybdenum disulfide, graphite and lead serving as solid lubricants. Disperesed throughout that structure is cobalt at an average particle size equal to or less than 20 .mu.m.