Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Joseph G. Sawyer0
David L. McDermott0
Date of Patent
September 1, 2009
0Patent Application Number
114363400
Date Filed
May 18, 2006
0Patent Primary Examiner
Patent abstract
A viscous fluid clutch for controlling the rotation of an engine cooling fan has a dividing disk separating a storage chamber from a working chamber. The dividing disk includes an opening having a geometry that defines a drain-back path to the working chamber regardless of the angular orientation of the clutch.
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