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, 2010
Filed:
Aug. 01, 2003
Hubertus Murrenhoff, Aachen, DE;
Christoph Boes, Nufringen, DE;
Hubertus Murrenhoff, Aachen, DE;
Christoph Boes, Nufringen, DE;
Moog GmbH, Boeblingen, DE;
Abstract
A valve () comprises: a body (); a bushing () slidably mounted on said body; a valve spool () slidably mounted on said bushing; said bushing and spool having respective control edges () that are adapted to cooperate with one another as a function of the relative position between said bushing and spool to vary the size of a control opening therebetween; a first drive () operatively arranged to controllably move one of said bushing and spool relative to said body; and a second drive () operatively arranged to controllably move the other of said bushing and spool relative to said body; whereby said first and second drives may be selectively operated to move said bushing and spool simultaneously in opposite directions to increase the dynamic response of said valve.