Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 23, 2008
Patent Application Number
10944031
Date Filed
September 17, 2004
Patent Primary Examiner
Patent abstract
A vane-type fluid displacement unit having a housing, a drive shaft extending through the housing, a rotor secured to the drive shaft and disposed within the housing, the rotor having at least one non-smooth top or bottom surface, and at least one vane secured to the rotor.
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