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:
Jan. 29, 1991
Filed:
Jul. 24, 1989
Applicant:
Inventors:
Lawrence C Kennedy, Kettering, OH (US);
James O Strader, Jr, Spring Valley, OH (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
192 / ; 192 / ; 123 4112 ;
Abstract
A fan clutch assembly for a vehicle includes a flexible, ferromagnetic valve plate for controlling fluid flow through a pump plate into a shear zone. When an electromagnetic coil is energized, the resulting flux deflects the valve plate away from the pump plate to open fluid gates in the pump plate. When the coil is de-energized, the valve plate returns to its original engagement position against the pump plate to close the fluid gates.