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. 20, 2019
Filed:
Mar. 22, 2016
Rolls-royce Plc, London, GB;
Garry Mark Edwards, Clevedon, GB;
ROLLS-ROYCE plc, London, GB;
Abstract
A rotor stage () of a gas turbine engine () comprises a platform () from which rotor blades extend. The platform is provided with a circumferentially extending damper ring (), the damper ring having an engagement surface () that engages with a platform engagement surface () of the platform (). The platform engagement surface () and the damper engagement surface () can move relative to each other in the radial direction. In use, the damper engagement surface () moves less in the radial direction than the platform engagement surface () in response to diametral mode excitation. This causes friction between the two surfaces, thereby dissipating energy and damping the excitation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile