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:
Feb. 23, 2021
Filed:
Mar. 07, 2019
United Technologies Corporation, Farmington, CT (US);
Russell B. Witlicki, Wethersfield, CT (US);
RAYTHEON TECHNOLOGIES CORPORATION, Farmington, CT (US);
Abstract
A contacting seal for a gas turbine engine includes a seal seat configured to rotate circumferentially about an axis of rotation and a seal element configured to contact the seal seat at an interface surface. The seal element is rotationally fixed relative to the axis of rotation. An actively-controlled actuation system is operably connected to the seal element to control a contact force between the seal element and the seal seat at the interface surface based on a level of lubricant flow to the interface surface. A method of operating a contacting seal includes positioning a rotationally fixed seal element in contact with a rotating seal seat at an interface surface between the seal seat and the seal element, and actively-controlling a contact pressure between the seal seat and the seal element at the interface surface utilizing an actuation system.