US Patent 7568896 Pump and method

Patent 7568896 was granted and assigned to Pratt & Whitney Canada on August, 2009 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Pratt & Whitney Canada

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

75688960

Patent Inventor Names

Kevin Allan Dooley0

Date of Patent

August 4, 2009

Patent Application Number

115649370

Date Filed

November 30, 2006

Patent Primary Examiner

‌

Charles G Freay

Patent abstract

A pump for moving a liquid including a stator and a rotor which rotates to move at least one helical pumping member. The rotor in rotation is radially supported relative to the stator only by a layer of liquid maintained between the rotor and stator by rotor rotation.