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:
Oct. 08, 2019
Filed:
Feb. 23, 2017
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventors:
Patrick Manoukian, Saint-Laurent, CA;
Sarah Theriault, Montreal, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64D 33/02 (2006.01); F02C 7/042 (2006.01); B64D 41/00 (2006.01); B64D 45/00 (2006.01);
U.S. Cl.
CPC ...
B64D 33/02 (2013.01); B64D 41/00 (2013.01); B64D 45/0005 (2013.01); F02C 7/042 (2013.01); B64D 2033/0213 (2013.01); B64D 2041/002 (2013.01); F05B 2220/50 (2013.01); F05B 2260/80 (2013.01);
Abstract
A system and method for controlling a position of an inlet door of an auxiliary power unit are provided. A first control signal comprising instructions for opening the inlet door to a selected one of at least a first position and a second position is output. A possible failure in a feedback signal associated with the selected one of the at least first position and second position is detected and a second control signal comprising instructions for opening the inlet door to the other one of the at least first position and second position is then output.