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:
Feb. 24, 2004
Filed:
Oct. 04, 2002
Wolfgang Clemens, Puschendorf, DE;
Klaus-Dieter Fiebelkorn, Minfeld, DE;
Gerhard Klebert, Bad Herrenalb, DE;
Klaus Ludwig, Weissenburg, DE;
Andre-Heinrich Meinhof, Rheinstetten, DE;
Holger Schmaedicke, Landau, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A positioner for a valve that is actuated by means of a drive. The positioner includes a locator ( ) and a control unit ( ). The locator ( ) detects the actual position of an actuator ( ). The control unit ( ) compares the actual position with a predefined desired position, and generates an actuating signal. A magnet ( ) having a magnetoresistive sensor, preferably a GMR sensor, is provided as the locator. The locator ( ) is less susceptible to dirt and less prone to wear and tear than a conventional slide potentiometer. The positioner is thus less fault-prone.