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:
Sep. 04, 2001
Filed:
Nov. 24, 1999
Applicant:
Inventors:
Tsuyoshi Hirayanagi, Toyohashi, JP;
Shigeki Umezawa, Kakegawa, JP;
Assignee:
NSK-Warner K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D 2/50638 ; F16D 1/368 ; F16D 1/374 ;
U.S. Cl.
CPC ...
F16D 2/50638 ; F16D 1/368 ; F16D 1/374 ;
Abstract
In a wet type multiplate clutch wherein outer tooth plates and inner tooth plates rotatable relative to each other are coaxially alternately disposed and are frictionally engaged with each other, of a plurality of oil grooves having opening portions opening to the inner peripheral edges of frictional materials secured to the inner tooth plates, at least 50 percent of the opening portions are opposed to a lubricant supply hole formed in a hub.