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. 16, 2021
Filed:
Feb. 08, 2017
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventor:
Michael Darby, Candiac, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 65/00 (2006.01); F16K 37/00 (2006.01); F02C 7/232 (2006.01); F16K 31/06 (2006.01);
U.S. Cl.
CPC ...
F02M 65/001 (2013.01); F16K 37/0091 (2013.01); F02C 7/232 (2013.01); F05D 2260/83 (2013.01); F16K 31/06 (2013.01);
Abstract
There are described methods and systems for testing operation of a solenoid valve in a control system. A valve command is sent to successively open and close a solenoid valve. A flow command from a control system is monitored to detect a change in the flow command in response to the valve command. The flow command is associated with regulation of fluid flow in a process controlled by the control system. Operation of the solenoid valve is confirmed when the change in flow command is detected.