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:
Jul. 31, 2012
Filed:
Apr. 22, 2008
Applicants:
Stefan Merz, Hechingen, DE;
Ulrich Gordon Mohn, Horb, DE;
Rene Constantin Scheerer, Freudenstadt, DE;
Martin Josef Zug, Hirrlingen, DE;
Inventors:
Stefan Merz, Hechingen, DE;
Ulrich Gordon Mohn, Horb, DE;
Rene Constantin Scheerer, Freudenstadt, DE;
Martin Josef Zug, Hirrlingen, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 23/10 (2006.01); F04B 49/12 (2006.01); F04C 14/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A pump unit includes a main pump () and a charge pump (), the pump capacity of which is adjustable via an adjusting element. To adjust the pump capacity of the charge pump (), an adjusting element of the charge pump () is acted upon by an adjusting force which is dependent on the inlet pressure of the main pump ().