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:
Sep. 05, 2017
Filed:
Mar. 14, 2013
Pratt & Whitney Canada Corp., Longueuil, CA;
Richard Ullyott, Saint-Bruno, CA;
Lazar Mitrovic, Longueuil, CA;
Jean Dubreuil, Boucherville, CA;
Stephen Christopher Kenny, Caledon Village, CA;
Guy Bouchard, Mont St-Hilaire, CA;
Ilya B. Medvedev, St. Petersburg, RU;
Keith Morgan, Westmount, CA;
Darius Jehangir Karanjia, Mississauga, CA;
Nashed Azer Youssef, Mississauga, CA;
PRATT & WHITNEY CANADA CORP., Longueuil, Quebec, unknown;
Abstract
A gas turbine engine including at least one high pressure turbine rotor and at least one high pressure compressor rotor drivingly engaged to a rotatable high pressure spool, a low pressure spool rotatable independently of the high pressure spool, at least one low pressure turbine rotor drivingly engaged to the low pressure spool, and a rotatable load drivingly engaged to the low pressure spool. A fixed rotational speed ratio is defined between rotational speeds of the at high pressure turbine and compressor rotors. A fixed rotational speed ratio is defined between rotational speeds of the low pressure turbine rotor(s) and of the low pressure spool. A low pressure compressor rotor is in driving engagement with the low pressure spool through a variable transmission which defines a variable rotational speed ratio between the rotational speeds of the low pressure spool and of the low pressure compressor rotor.