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:
Mar. 22, 2022
Filed:
Aug. 28, 2019
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventors:
Kenneth Parkman, Halton Hills, CA;
Maksim Pankratov, Mississauga, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 11/02 (2006.01); F02C 7/28 (2006.01); F01D 25/16 (2006.01); F16J 15/447 (2006.01); F16C 19/52 (2006.01);
U.S. Cl.
CPC ...
F01D 11/02 (2013.01); F02C 7/28 (2013.01); F01D 25/16 (2013.01); F05D 2220/32 (2013.01); F05D 2240/55 (2013.01); F16C 19/525 (2013.01); F16J 15/447 (2013.01);
Abstract
A labyrinth seal assembly for a gas turbine engine having a rotatable shaft. The labyrinth seal assembly has: a housing defining a cavity for receiving a lubricant; a labyrinth seal between the housing and the rotatable shaft of the gas turbine engine, the labyrinth seal having a seal rotor securable to the rotatable shaft and a seal stator secured to the housing; and an insulation layer between the seal stator and the housing, the insulation layer composed of a material different than those used for the seal stator and the housing.