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. 25, 1977
Filed:
Aug. 25, 1975
Everett George Blair, Plainfield, IN (US);
Wallace-Murray Corporation, New York, NY (US);
Abstract
A fluid coupling of the type adapted for a fan for an automotive cooling system. A driving disc turns within a housing to which the fan is coupled. One face of the disc carries concentric ridges or lands which are positioned to project into complementary concentric channels carried by the housing, with a shear fluid such as a silicone fluid at least partially filling the concentric channels. Secant grooves extend across the top of the interdigitated ridges of the drive disc and of the housing interior to cause the silicone shear fluid to move generally radially. Such fluid circulation increases the useful life of the shear fluid by inhibiting high temperature build-up thereof.