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:
Jul. 20, 2004
Filed:
Sep. 27, 2002
Douglas P. Cleereman, Greendale, WI (US);
Jonathan B. Johnson, Milwaukee, WI (US);
Carmen F. Bucher, Waukesha, WI (US);
Dennis J. Rygiewicz, Brookfield, WI (US);
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Abstract
A system and method for controlling and monitoring operation of a valve are disclosed. The system includes an actuator and a switch that, upon being actuated, provides a control signal to the actuator designed to cause the valve to change from a first state to a second state. The system further includes a sensor positioned downstream of the valve, an indicator, and a detection device coupled at least indirectly to the switch, the sensor and the indicator. When not detecting a sensor failure, the detection device allows the indicator to indicate that the valve has changed its state in response to the switch being actuated when the sensor indicates that the valve has so changed. Upon detecting a sensor failure, the detection device prevents the indicator from indicating that the valve has changed its state in response to the switch being actuated.