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:
Apr. 04, 2017
Filed:
Mar. 27, 2015
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventors:
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02C 3/107 (2006.01); F02C 7/36 (2006.01); F02K 3/02 (2006.01); F02C 3/10 (2006.01); F16H 1/22 (2006.01); F02C 7/32 (2006.01); F16H 37/04 (2006.01);
U.S. Cl.
CPC ...
F02C 7/36 (2013.01); F02C 3/10 (2013.01); F02C 3/107 (2013.01); F02C 7/32 (2013.01); F02K 3/025 (2013.01); F16H 1/22 (2013.01); F05D 2220/325 (2013.01); F05D 2250/313 (2013.01); F05D 2260/4031 (2013.01); F16H 1/222 (2013.01); F16H 37/041 (2013.01);
Abstract
The described reduction gearbox of a gas turbine engine includes a first gear reduction stage having an input gear adapted to be driven by a turbine output shaft. The input gear transfers power received from the turbine output shaft laterally away from the input gear to an input speed gear. Each input speed gear engages an output speed gear to define a main speed reduction gear set, and the main speed reduction gear sets are laterally spaced apart from one another to define a gap. The gearbox has a second gear reduction stage driven by the output speed gears, the second stage adapted to drive an engine output shaft.