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:
Dec. 15, 2009
Filed:
Dec. 01, 2004
Curtis C Cowan, East Hampton, CT (US);
Jorge I. Farah, Glastonbury, CT (US);
Debora F. Kehret, Manchester, CT (US);
Stanley Keysa, Windsor, CT (US);
Jeffrey R. Lavin, Bloomfield, CT (US);
Michael Murphy, Vernon, CT (US);
Stephen A. Paul, Andover, CT (US);
Richard Scott, Andover, CT (US);
Curtis C Cowan, East Hampton, CT (US);
Jorge I. Farah, Glastonbury, CT (US);
Debora F. Kehret, Manchester, CT (US);
Stanley Keysa, Windsor, CT (US);
Jeffrey R. Lavin, Bloomfield, CT (US);
Michael Murphy, Vernon, CT (US);
Stephen A. Paul, Andover, CT (US);
Richard Scott, Andover, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A cooled exhaust duct for use in gas turbine engines is provided. The cooled exhaust duct includes an axial centerline, a circumference, an annulus, and a plurality of radially expandable bands. The annulus is disposed between a first wall and a second wall, and extends along the axial centerline. The first wall is disposed radially inside of the second wall. Each of the plurality of radially expandable bands extends circumferentially within the annulus. The bands are axially spaced apart from one another. Each band includes a first portion attached to the first wall, a second portion attached to the second wall and an intermediate portion connected to the first and second portions. The bands create circumferentially extending compartments that inhibit axial travel of the cooling air within the annulus.