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:
Dec. 09, 1986
Filed:
Oct. 14, 1983
Applicant:
Inventors:
Masaharu Hayashi, Toyota, JP;
Masato Itakura, Toyota, JP;
Assignee:
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
192 / ; 192 / ;
Abstract
A viscous fluid coupling device for controlling the transmission of an outpt torque in response to the ambient temperature of the device. The coupling device includes a valve plate for successively effecting first, second and third operational modes to maintain the output torque transmission respectively at low, medium and high levels. The valve plate is provided with a slot which is arranged to effect a fourth operational mode between the second and third operational modes thereby to reliably effect the second operational mode in response to a drop in the ambient temperature of the device.