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. 01, 2015
Filed:
Jun. 27, 2012
Ching-pang Lee, Cincinnati, OH (US);
Kok-mun Tham, Oviedo, FL (US);
John M. Owen, Bath, GB;
Gary D. Lock, Bath, GB;
Carl M. Sangan, Camerton, GB;
Vincent P. Laurello, Hobe Sound, FL (US);
Ching-Pang Lee, Cincinnati, OH (US);
Kok-Mun Tham, Oviedo, FL (US);
John M. Owen, Bath, GB;
Gary D. Lock, Bath, GB;
Carl M. Sangan, Camerton, GB;
Vincent P. Laurello, Hobe Sound, FL (US);
SIEMENS AKTIENGESELLSCHAFT, München, DE;
Abstract
A seal assembly provided between a hot gas path and a disc cavity in a turbine engine includes an annular outer wing member extending from an axially facing side of a rotor structure toward an adjacent non-rotating vane assembly, and a plurality of fins extending radially inwardly from the outer wing member and extending toward the adjacent non-rotating vane assembly. The fins are arranged such that a space having a component in a circumferential direction is defined between adjacent fins. Rotation of the fins during operation of the engine effects a pumping of purge air from the disc cavity toward the hot gas path to assist in limiting hot working gas leakage from the hot gas path to the disc cavity by forcing the hot working gas away from the seal assembly.