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:
Aug. 29, 2017
Filed:
Dec. 01, 2014
Pratt & Whitney Canada Corp., Longueuil, CA;
Alain Carrieres, Boucherville, CA;
PRATT & WHITNEY CANADA CORP., Longueuil, QC, CA;
Abstract
A seal arrangement for a gas turbine engine includes a seal runner having a sealing lip extending radially outwardly from a root portion to a tip portion. A static seal is mounted in axially opposed facing relationship to the sealing lip. The static seal and the sealing lip define an axial gap therebetween. A point of flexion is provided in the root portion to allow the sealing lip to flex relative to the axial gap under centrifugal loads, and wherein a center of gravity of the sealing lip is disposed radially outwardly from the point of flexion by a first predetermined amount and axially offset from the point of flexion by a second predetermined amount. The first and second predetermined amounts are selected to modulate the centrifugal flexion of the sealing lip so as to compensate at least partially for thermally induced deformation of the sealing lip.