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:
Jul. 22, 2025
Filed:
Mar. 14, 2024
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventors:
Michel Labrecque, Sainte-Julie, CA;
Kevin Nguyen, Montreal, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64D 33/02 (2006.01); B01D 46/10 (2006.01); B01D 46/44 (2006.01); B01D 46/58 (2022.01); B01D 46/62 (2022.01); F02C 7/05 (2006.01); B64C 27/04 (2006.01);
U.S. Cl.
CPC ...
B64D 33/02 (2013.01); B01D 46/103 (2013.01); B01D 46/446 (2013.01); B01D 46/58 (2022.01); B01D 46/62 (2022.01); F02C 7/05 (2013.01); B01D 2265/025 (2013.01); B01D 2267/40 (2013.01); B01D 2273/14 (2013.01); B64C 27/04 (2013.01); B64D 2033/022 (2013.01); B64D 2033/0253 (2013.01);
Abstract
A helicopter has an air inlet barrier filter (IBF) system including a guide rail extending axially along one side of a nacelle housing a helicopter engine. A filter panel is slidable along the guide rail for movement between a filtered position in which the filter panel covers an air inlet of the nacelle and an unfiltered position in which the filter panel uncovers a total surface area of the air inlet to provide for a fully unobstructed air flow to the engine.