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:
Jun. 25, 2024
Filed:
Nov. 22, 2019
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventors:
Hien Duong, Mississauga, CA;
Jason Nichols, Mississauga, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 5/14 (2006.01); F02K 3/06 (2006.01); F04D 29/32 (2006.01); F04D 29/38 (2006.01);
U.S. Cl.
CPC ...
F01D 5/141 (2013.01); F02K 3/06 (2013.01); F04D 29/324 (2013.01); F04D 29/384 (2013.01); F05D 2220/36 (2013.01); F05D 2240/303 (2013.01); F05D 2240/304 (2013.01); F05D 2240/307 (2013.01); F05D 2250/70 (2013.01);
Abstract
An impeller having a hub, blades extending from the hub along respective spans from roots to tips, the blades extending along respective chords from leading edges to trailing edges, the leading edge of at least one of the blades having a cutback section defining a sweep at the root, the cutback section extending in a spanwise direction from the hub to a location at least about 5% of the span from the hub of the at least one of the blades, and the cutback section extending in a chordwise direction along at least about 5% of the chord of the at least one of the blades.