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:
Mar. 30, 2010
Filed:
Feb. 26, 2004
Applicant:
Kevin J. Landhuis, Ankeny, IA (US);
Inventor:
Kevin J. Landhuis, Ankeny, IA (US);
Assignee:
Sauer Danfoss Inc., Ames, IA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01C 1/00 (2006.01); F03C 2/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A roller vane pump that uses slippers on its rollers to create multiple seals. The roller vane pump has a fixed cam ring that has a rotor within. The rotor has openings that receive rollers that rotate about the inside of the cam ring. Each roller has a slipper rotatably connected thereto. The use of the slipper allows multiple seals to be created between the slipper, the rollers, and the cam ring and additionally allows for the roller vane pump to rotate clockwise or counterclockwise without the changing of parts.