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:
May. 24, 2011
Filed:
Apr. 17, 2007
Mark D Taylor, Derby, GB;
John R Webster, Derby, GB;
Mark D Taylor, Derby, GB;
John R Webster, Derby, GB;
Rolls-Royce plc, London, GB;
Abstract
A rotor and a stator assembly, wherein the rotor () comprises at least one stage of rotor blades () and the stator () comprises at least one stage of turbine stator vanes (). The rotor blades () have aerofoils and platforms () and the turbine stator vanes () having aerofoils and platforms (). A seal () is defined between the rotor blade () platforms () and the stator vane () platforms () wherein a portion (B) of the rotor blade platforms () and/or a portion (B) of the stator vane () platforms () comprise a shape memory alloy member or a bimetallic member. The shape memory alloy member, or bimetallic member, controls the flow of cooling air through the seals () allowing a greater cooling flow at higher temperatures than at lower temperatures.