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:
May. 25, 2004
Filed:
Oct. 07, 2002
Applicant:
Inventors:
Martin Heusser, Munich, DE;
Gerhard Lörner, Eching, DE;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
F04B 2/300 ;
U.S. Cl.
CPC ...
F04B 2/300 ;
Abstract
An electromotor M of a electrohydraulic motor pump aggregate G drives at least one pump stage P, P , P . An attached element C is inserted between at least one pressure side port of the pump stage, a return line , and at least one consumer port A, B, . A multiways control valve is installed between the consumer port and the pressure side port. A pressure limiting valve R , R constructed as a seated valve is installed between the consumer port A, B, and the return line . The motor pump aggregate G has an automatic hydraulic pressure relieving device D for relieving the system pressure whenever the electromotor M is switched off.