Power plants – Combustion products used as motive fluid – With exhaust treatment
Reexamination Certificate
2004-12-01
2009-12-15
Rodriguez, William H (Department: 3741)
Power plants
Combustion products used as motive fluid
With exhaust treatment
C060S770000, C060S266000
Reexamination Certificate
active
07631481
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.
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Cowan Curtis C
Farah Jorge I.
Kehret Debora F.
Keysa Stanley
Lavin Jeffrey R.
Rodriguez William H
United Technologies Corporation
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