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. 30, 1992
Filed:
Jun. 27, 1991
Applicant:
Inventors:
Shinji Yamada, Fujisawa, JP;
Hideo Ozawa, Yamato, JP;
Mitsuaki Andoh, Yokohama, JP;
Yasuhiro Shirasaka, Yamato, JP;
Hideyuki Morioka, Fujisawa, JP;
Assignee:
Oiles Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B22F / ;
U.S. Cl.
CPC ...
428547 ; 428552 ; 428553 ; 428 99 ; 428139 ; 428156 ; 428172 ;
Abstract
Disclosed herein is a (1) A multi-layered sintered sliding member comprising a back metal composed of a steel plate having (i) a plurality of independent protrusions formed at a surface thereof or (ii) a continuous protrusion and a plurality of independent recesses defined with said protrusions at the surface thereof and a sintered alloy layer formed integrally by securing on the surface of said back metal covering the surface of said protrusions, in which said sintered alloy layer is composed of a low density alloy region and a high density alloy region.