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:
Mar. 01, 2016
Filed:
Jul. 20, 2012
Applicant:
Christopher Bryan Day, Mississauga, CA;
Inventor:
Christopher Bryan Day, Mississauga, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, QC, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02P 17/00 (2006.01); G01R 31/00 (2006.01); G01R 31/327 (2006.01); H01H 47/00 (2006.01);
U.S. Cl.
CPC ...
G01R 31/3278 (2013.01); H01H 47/002 (2013.01);
Abstract
Feedback from a solenoid is achieved by adding at least one variable resistance in parallel with the solenoid current feedback circuit for position detection. The resistance has current flowing therethrough when a switching device actuated by the solenoid is in one position or transitions from one position to at least one other position. A feedback current may be measured in the current feedback circuit and the position of the switching device in response to actuation thereof by the solenoid may be determined from the measured feedback current.