Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Between axial flow runner and vane or vane diaphragm structure
Reexamination Certificate
2009-01-13
2011-12-27
Zarneke, David (Department: 2891)
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
Between axial flow runner and vane or vane diaphragm structure
C415S174500, C416S19300A, C416S19300A, C416S21900R
Reexamination Certificate
active
08083475
ABSTRACT:
The present application provides an angel wing seal for a turbine bucket. The angel wing seal may include a first wing with a sinusoidally-shaped outer edge and a number of wing teeth positioned thereon.
REFERENCES:
patent: 6189891 (2001-02-01), Tomita et al.
patent: 6506016 (2003-01-01), Wang
patent: 2007/0224035 (2007-09-01), Nigmatulin
patent: 2008/0014094 (2008-01-01), Itzel et al.
patent: 2008/0056889 (2008-03-01), Cheng et al.
U.S. Appl. No. 11/896,533, filed Sep. 4, 2007, Bulgrin, et al.
Bruner Ralph Chris
Bulgrin Charles Alan
Itzel Gary Michael
Jacala Ariel Caesar-Prepena
General Electric Company
Sutherland & Asbill & Brennan LLP
Zarneke David
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