Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Oswald Friedmann0
Christoph Vetter0
Eric Müller0
Marco Grethel0
Date of Patent
March 29, 2011
Patent Application Number
11821587
Date Filed
June 23, 2007
Patent Primary Examiner
Patent abstract
A positive-displacement pump having an eccentrically positioned internal ring gear and pinion within a pump housing. Pressurized operating fluid is provided by the pump to actuate an actuation piston of a clutch unit, such as a double clutch unit. The clutch unit is drivingly coupled with the pump for movement between engaged and disengaged positions. At least one throughbore is provided in the pump housing within which throughbore the clutch actuation piston is guided.
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