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:
Nov. 29, 2011
Filed:
Dec. 12, 2005
Applicants:
Waldemar Hebisch, Darmstadt, DE;
Markus Meitinger, Eppstein, DE;
Karl Prinzhorn, Woellstadt, DE;
Dirk Webert, Bad Homburg, DE;
Inventors:
Waldemar Hebisch, Darmstadt, DE;
Markus Meitinger, Eppstein, DE;
Karl Prinzhorn, Woellstadt, DE;
Dirk Webert, Bad Homburg, DE;
Assignee:
LuK Fahrzeug-Hydraulik GmbH & Co. KG, Bad Homburg v.d.H., DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C 15/00 (2006.01); F04C 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a preferred embodiment of the present invention, a positive-displacement pump, in particular a vane cell pump, having a pump element, in particular a rotor, which is situated within a contour ring and rotatable between two side surfaces where a limited coating is located on at least one of the side surfaces.