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:
Jan. 29, 2013
Filed:
Sep. 21, 2009
Klaus Biester, Wienhausen, DE;
Peter Kunow, Berlin, DE;
Klaus Biester, Wienhausen, DE;
Peter Kunow, Berlin, DE;
Cameron International Corporation, Houston, TX (US);
Abstract
A valve control device, in particular for control pods or similar equipment used in the mining and/or production of mineral oil/natural gas, comprises a valve housing in which hole or boring sections are arranged, and a valve slide movable relative to the hole sections, with at least a first and a second flow hole for the alternative connection of a feed line from a fluid pressure hose with at least one actuator or of the actuator to return line for leading the fluid away, wherein in each case one of the connections is made and the other is interrupted. To improve such a valve control device in that with only slight and economical constructional modifications with retention of all the advantages of known valve control devices, a substantial reduction in the leakage flow is facilitated or even almost completely suppressed, at least first and second valve elements which in the closed position can be pressed onto a valve seat formed especially at a hole section are laterally assigned to the flow holes, wherein in the connection position of the first flow hole the second valve element is in the closed position and in the connecting position of the second flow hole the first valve element is in the closed position each pressed onto the respective assigned valve seat in its closed position.