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:
Sep. 18, 2012
Filed:
Jun. 09, 2008
Eric O. Cummings, Lexington, SC (US);
Richard J. Frazier, Eastanollee, GA (US);
Donald S. Divelbiss, Howard, OH (US);
Terry L. Divelbiss, Fredericktown, OH (US);
David W. Haselden, Jr., Canon, GA (US);
Eric O. Cummings, Lexington, SC (US);
Richard J. Frazier, Eastanollee, GA (US);
Donald S. Divelbiss, Howard, OH (US);
Terry L. Divelbiss, Fredericktown, OH (US);
David W. Haselden, Jr., Canon, GA (US);
Ross Operating Valve Company, Troy, MI (US);
Abstract
A valve body has an elongated bore in communication with an inlet port and an outlet port. A valve element is movable within the bore between deactuated and actuated positions. A valve sensor generates a sensor signal indicative of an instantaneous parameter of the valve that changes between the deactuated and actuated positions. A logic unit receives the sensor signal and a pilot command signal that actuates the valve. A predetermined change in the pilot command signal causes the logic unit to determine a cycle parameter responsive to a time period between two predetermined events. At least the beginning or end of the time period corresponds to a predetermined value of the sensor signal. The individual determinations of the cycle parameter are accumulated to obtain an expected cycle parameter. The logic unit generates an indication signal when the cycle parameter exhibits a predetermined variance from the expected cycle parameter.