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. 23, 2021
Filed:
Jan. 31, 2018
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventor:
Alexander Smith, Montreal, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 25/18 (2006.01); F16J 15/44 (2006.01); F16J 15/28 (2006.01); F02C 7/28 (2006.01); F02C 7/06 (2006.01);
U.S. Cl.
CPC ...
F01D 25/186 (2013.01); F01D 25/183 (2013.01); F16J 15/28 (2013.01); F16J 15/441 (2013.01); F16J 15/442 (2013.01); F02C 7/06 (2013.01); F02C 7/28 (2013.01); F05D 2240/50 (2013.01); F05D 2240/55 (2013.01); F05D 2260/38 (2013.01); F05D 2260/98 (2013.01); F05D 2270/42 (2013.01); F05D 2300/20 (2013.01); F05D 2300/611 (2013.01);
Abstract
There is provided a non-contacting seal assembly for a gas turbine engine, having a housing that houses a sealing ring; and a counter component cooperating with the sealing ring. The sealing ring and the counter component are rotatable relative to each other about a central axis and define sealing faces circumferentially extending around the central axis. The sealing faces face each other and are spaced apart from each other by a controlled gap. At least one of the sealing faces is coated with a non-abradable material. A method of operating a non-contacting seal assembly is also provided.