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:
Nov. 30, 2010
Filed:
Jan. 25, 2006
Peter Bruck, Althornbach, DE;
Hermann Albert, Lebach, DE;
Peter Bruck, Althornbach, DE;
Hermann Albert, Lebach, DE;
Hydac Fluidtechnik GmbH, Sulzbaach/Saar, DE;
Abstract
A proportional pressure control valve includes a valve housing () with at least three fluid connections (). The valve can be connected to a hydraulic drive system with a pre-determinable consumer pressure. The valve can perform reliable valve switching functions even for low-viscous fluid media, and can reduce its susceptibility to disturbance variables. A valve piston () actively connected to a pilot seat () by an energy accumulator () can be controlled by a control device (). The consumer pressure on a fluid connection () acts on the valve piston () such that, according to the consumer pressure and the actuating force of the control device (), a fluid can flow between the two other fluid connections (and) in both directions inside the valve housing ().