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:
Nov. 10, 2015
Filed:
Feb. 25, 2014
Siemens Aktiengesellschaft, München, DE;
Ching-Pang Lee, Cincinnati, OH (US);
Kok-Mun Tham, Oviedo, FL (US);
Eric Schroeder, Loveland, OH (US);
Erik Johnson, Cincinnati, OH (US);
Dustin Muller, Cincinnati, OH (US);
Steven Coppess, Cincinnati, OH (US);
Manjit Shivanand, Winter Springs, FL (US);
Kahwai G. Muriithi, Grennville, SC (US);
SIEMENS AKTIENGESELLSCHAFT, München, DE;
Abstract
A seal assembly between a disc cavity and a hot gas path in a gas turbine engine includes a stationary vane assembly and a rotating blade assembly axially upstream from the vane assembly. A platform of the blade assembly has a radially outwardly facing first surface, an axially downstream facing second surface defining an aft plane, and a plurality of grooves extending into the second surface such that the grooves are recessed from the aft plane The grooves are arranged such that a circumferential space is defined between adjacent grooves During operation of the engine, the grooves impart a circumferential velocity component to purge air flowing out of a disc cavity through the grooves to guide the purge air toward a hot gas path such that the purge air flows in a desired direction with reference to a direction of hot gas flow through the hot gas path.