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. 21, 2021
Filed:
Jun. 21, 2019
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventors:
Benjamin Bregani, Montreal, CA;
Sean McCarthy, Beaconsfield, CA;
Nicolas Renard, St-Lambert, CA;
Andrew Ghattas, La Prairie, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F 25/00 (2006.01); G01M 15/14 (2006.01); F01M 11/12 (2006.01); G01F 23/74 (2006.01);
U.S. Cl.
CPC ...
G01F 25/0076 (2013.01); G01F 25/0069 (2013.01); G01M 15/14 (2013.01);
Abstract
A method and system are described for detecting a fault of a fluid level sensing device associated with an aircraft engine, the fluid level sensing device arranged to measure a variance in a fluid level. The method comprises triggering a timer, while the timer is running, receiving a measurement indicative of the fluid level from the fluid level sensing device, resetting the timer when at least one timer-reset condition has been met, and outputting a fault signal when the timer reaches a timer threshold.