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. 27, 2002
Filed:
Feb. 26, 2001
Peter Bruck, Zweibrucken, DE;
Thorsten Hillesheim, Saarbrucken, DE;
Hydac Fluidtechnik GmbH, , DE;
Abstract
The invention relates to a pressure control valve ( ) comprising a control piston ( ) which is able to slide in a valve hole ( ). Under the effect of an energy accumulator ( ) said piston in one direction of displacement connects a pump connection ( ) with a consumer connection ( ) and in the other direction of displacement connects the consumer connection ( ) with a tank connection ( ) such that the pump connection ( ) is closed off. The aim of the invention is to provide a pressure control valve which functions reliably and in a stable manner even in case of elevated control dynamics. To this end, independently of the direction of displacement of the control piston ( ) a minimum volume flow present between the piston and the valve hole ( ) dampens the displacement of the control piston ( ).