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:
Aug. 14, 2012
Filed:
Sep. 19, 2007
Adam Wilhelm, Munich, DE;
Peter Weber, Herrrsching, DE;
Johann Rothkopf, Finsing, DE;
Tamara Rothkopf, Legal Representative, Finsing, DE;
Mehmet Gueluem, Markgroeningen, DE;
Fevzi Yildirim, Gerlingen, DE;
Thomas Wuensch, Ludwigsburg, DE;
Reinhard Dittmann, Feldkirchen, DE;
Adam Wilhelm, Munich, DE;
Peter Weber, Herrrsching, DE;
Johann Rothkopf, Finsing, DE;
Tamara Rothkopf, legal representative, Finsing, DE;
Mehmet Gueluem, Markgroeningen, DE;
Fevzi Yildirim, Gerlingen, DE;
Thomas Wuensch, Ludwigsburg, DE;
Reinhard Dittmann, Feldkirchen, DE;
Robert Bosch GmbH, , DE;
Abstract
A pumping unit having a pump chamber with a rotor mounted in a rotatable manner within the chamber. The pumping chamber is formed by a circumferential wall and two end walls. The circumferential wall is formed on an annular collar of a pump part and has on its inner surface a track on which sealing bodies of a rotor roll. To avoid deformation of the pump part by hydraulic forces or by pressing-in forces, ribs are arranged on the outer surface of the circumferential wall which extend away from the pump chamber. A shoulder is arranged on the side of the end wall which is directed away from the pump chamber. The shoulder is connected by a press fit to the pump housing and has thin walls so that pressing forces do not result in any deformation to the end wall of the pump chamber.