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:
Sep. 05, 2017
Filed:
Aug. 12, 2014
Rolls-royce Plc, London, GB;
Facc Ag, Ried in Innkreis, AT;
Kristofer John Bottome, Nottingham, GB;
James Andrew Lee, Ryde, GB;
Paul Mason, Derby, GB;
Ewan Fergus Thompson, Derby, GB;
Gion Barandun, Rapperswil, CH;
Markus Henne, Rapperswil, CH;
Konstantin Horejsi, Ried in Innkreis, AT;
Martin Fleischmann, Ried in Innkreis, AT;
Christof Obertscheider, Ried in Innkreis, AT;
Thomas Keusch, Ried in Innkreis, AT;
ROLLS-ROYCE PLC, London, GB;
FACC AG, Ried in Innkreis, AT;
Abstract
An annulus filler, mounted to a rotor disc of a gas turbine engine and bridging the gap between two adjacent blades attached to the rotor disc, is disclosed. The annulus filler, formed from a polymer matrix composite material, includes an outer lid, defining an airflow surface for air drawn through the engine in an axial airflow direction, and a support structure, connectable to the rotor disc, to support the rear of the lid on the rotor disc. The support structure has two support walls extending from opposing lateral sides of the lid to an attachment strap for receiving a hook on the rotor disc, the attachment strap bridging the support walls. Under centrifugal loads, the opposing support walls resiliently deform. Each support wall has a concave rear edge. Each rear edge has a first curved section, a second curved section and a substantially straight section therebetween.