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, 2008
Filed:
Sep. 17, 2004
Applicants:
Michael a Betz, Huxley, IA (US);
Eric D Bretey, Rowan, IA (US);
Robert J Klinkel, Ames, IA (US);
Kevin J Landhuis, Ankeny, IA (US);
Inventors:
Michael A Betz, Huxley, IA (US);
Eric D Bretey, Rowan, IA (US);
Robert J Klinkel, Ames, IA (US);
Kevin J Landhuis, Ankeny, IA (US);
Assignee:
Sauer-Danfoss, Inc., Ames, IA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03C 4/00 (2006.01); F04C 18/00 (2006.01);
U.S. Cl.
CPC ...
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.