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. 07, 2009
Filed:
Oct. 09, 2003
Hermann Maier, Waldachtal, DE;
Roland Belser, Haigerloch, DE;
Hermann Maier, Waldachtal, DE;
Roland Belser, Haigerloch, DE;
Brueninghaus Hydromatik GmbH, Elchingen, DE;
Abstract
The invention relates to a regulator device () for a hydraulic pump which pumps into at least one working pipe (), and to a valve unit for said pump. The pumping volume of the hydraulic pump () is regulated with the aid of a regulator device () exposed to a regulating pressure which is regulated by an adjusting valve () in conformity to a first and a second pressure. The first pressure passes through a first pressure pipe () and acts on a first measuring surface, the second pressure passes through a second pressure pipe () and acts on a second pressure surface opposite to the first surface of the adjusting valve (), the first pressure being higher than the second pressure. Said invention is characterized in that a pressure chamber () is arranged between the first and second measuring surfaces, thereby forming a discharge channel towards the second pressure pipe ().