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. 28, 1984
Filed:
Feb. 08, 1982
Applicant:
Inventors:
Assignee:
Aisin Seiki Kabushiki Kaisha, , JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D / ; F16D / ;
U.S. Cl.
CPC ...
192 / ; 192 / ; 192 / ;
Abstract
A cooling fan device for use with an internal combustion engine in which there is provided a viscous fluid coupling. A viscous fluid valve is operable to control the opening of a hole so as to regulate the flow of fluid from a working chamber to a reservoir chamber. The valve which is operated in response to the change in the temperature of the engine cooling water, is secured to a slidable plug which is surrounded by a diaphragm. A changover valve controls the admission of suction air (vacuum) or atmospheric air in response to the change in engine pressure.