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:
Aug. 31, 1993
Filed:
May. 15, 1991
Applicant:
Inventors:
Tsutomu Shimamura, Shizuoka, JP;
Muneo Mizuta, Shizuoka, JP;
Assignee:
Jatco Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
192 7012 ; 1921 / ;
Abstract
A hydraulic frictional device disclosed herein is a multiple plate clutch or brake. The device includes a set of interleaved friction plates including a plurality of driving plates and a plurality of driven plates. In order for increased dissipation of heat from the friction plates, some of the interleaved friction plates has radially extending through passages for a hydraulic fluid to pass therethrough.