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, 2009
Filed:
Nov. 24, 2004
Warren Arthur Nelson, Clifton Park, NY (US);
Brian Peter Arness, Simpsonville, SC (US);
Paul Thomas Marks, Scotia, NY (US);
Raymond Edward Chupp, Glenville, NY (US);
Tara Easter Mcgovern, Simpsonville, SC (US);
Warren Arthur Nelson, Clifton Park, NY (US);
Brian Peter Arness, Simpsonville, SC (US);
Paul Thomas Marks, Scotia, NY (US);
Raymond Edward Chupp, Glenville, NY (US);
Tara Easter Mcgovern, Simpsonville, SC (US);
General Electric Company, Schenectady, NY (US);
Abstract
A pattern for improving aerodynamic performance of a turbine includes a material disposed in a pattern at a base surface of a turbine shroud such that the material is capable of abradable contact with a tip portion of a turbine bucket. The pattern includes a first plurality of ridges disposed at the base surface such that a first portion of the first plurality of ridges corresponding to a back portion of the turbine bucket is oriented at a first angle with respect to an axis of rotation of the turbine bucket. Each ridge of the first plurality of ridges has a first sidewall and a second sidewall having a first end and a second end. The first ends of the first and second sidewalls extend from the base surface. The first and second sidewalls slope toward each other with substantially equal but opposite slopes until meeting at the second ends of respective first and second sidewalls defining a centerline and a top portion of the ridge.