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:
Dec. 23, 2003
Filed:
Jan. 31, 2002
Applicant:
Inventors:
Andrew Vernon Olver, Reading, GB;
Giulio Francesco Contaldi, London, GB;
Assignee:
IC Innovations, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F03C 2/00 ;
U.S. Cl.
CPC ...
F03C 2/00 ;
Abstract
A rotary pump for pumping compressible fluid comprising an eccentrically mounted rotor and a stator . The stator comprises a stator inner liner that is free to rotate, driven directly or in response to rotation of the rotor such that the relative velocity between the outer surface of the rotor and the inner surface of the stator is reduced. The vanes are held at each end by sockets in the rotor and stator . The vane and socket coupling provides fluid sealing without liquid lubricant. Opposing solid lubricant and hard surfaces are used on contact surfaces between the elements.