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:
Mar. 24, 1998
Filed:
Feb. 27, 1996
Applicant:
Inventor:
Shigeki Umezawa, Shizuoka, JP;
Assignee:
NSK-Warner Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
1882 / ; 188250 ;
Abstract
A wet frictional plate including a made of a metal plate that is formed so as to have a plate thickness which changes to gradually increase from its outer circumferential portion toward its inner circumferential portion. Frictional materials are bonded to the surfaces of the metal plate while they are pressed and heated to make the frictional surfaces of the frictional materials parallel to each other. As a result, the density of the frictional materials increases in a direction from the outer circumferential portion of the wet frictional plate toward its inner circumferential portion.