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:
Feb. 14, 2023
Filed:
Sep. 10, 2019
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventors:
Ghislain Plante, Verdun, CA;
Keith Morgan, Westmount, CA;
Stephen Mah, Brossard, CA;
Patrick Valois, Longueuil, CA;
Robert Peluso, St-Laurent, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02C 7/36 (2006.01); F01D 9/02 (2006.01); F02C 3/04 (2006.01);
U.S. Cl.
CPC ...
F02C 7/36 (2013.01); F01D 9/02 (2013.01); F02C 3/04 (2013.01); F05D 2230/80 (2013.01); F05D 2260/40 (2013.01);
Abstract
A method of providing an engine family includes providing a first engine having a low pressure turbine driving a low pressure compressor at a first speed ratio, and a high pressure turbine driving a high pressure compressor. The method includes providing a second engine by changing the first speed ratio of the first engine to a second speed ratio.