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:
May. 03, 1988
Filed:
Mar. 09, 1987
Applicant:
Inventors:
Reece R Fuehrer, Danville, IN (US);
Donald Klemen, Carmel, IN (US);
James C Polak, Indianapolis, IN (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D / ; F16D / ; F16D / ;
U.S. Cl.
CPC ...
192 8711 ; 1921 / ;
Abstract
A clutch assembly has two pistons each having an apply chamber for independently controlling engagement of respective friction plates. An axially fixed wall is disposed adjacent the pistons opposite to the apply chambers. Fluid is admitted between the wall and the pistons such that during rotation of the clutch assembly, centrifugal pressure generated in the fluid in the apply chambers is counteracted by centrifugal pressure generated in the fluid between the wall and the pistons.