Rotary kinetic fluid motors or pumps – Including thermal expansion joint – Circumferentially spaced nozzle or stator segments
Reexamination Certificate
2005-12-06
2005-12-06
Nguyen, Hoang (Department: 3748)
Rotary kinetic fluid motors or pumps
Including thermal expansion joint
Circumferentially spaced nozzle or stator segments
C415S170100
Reexamination Certificate
active
06971844
ABSTRACT:
Spline seals are provided in registering end faces of upper and lower diaphragm segments in a steam turbine at each of the horizontal joints. The diaphragm segments each include inner and outer semi-annular rings with circumferentially spaced partitions extending therebetween. The registering end faces of each of the inner and outer semi-annular rings of the segments are spanned by spline seals which may comprise a sheet metal plate, a sheet metal body having reversely-curved ends, a solid body having bulbous ends or a sheet metal plate covered by a metallic or ceramic woven cloth. Leakage paths, both in axial and radial directions, are minimized or precluded.
REFERENCES:
patent: 6340285 (2002-01-01), Gonyou et al.
patent: 6343911 (2002-02-01), Burdgick
patent: 6419445 (2002-07-01), Burdgick
patent: 6648332 (2003-11-01), Burdgick
patent: 6722846 (2004-04-01), Burdgick
patent: 6722850 (2004-04-01), Burdgick
General Electric Company
Nguyen Hoang
Nixon & Vanderhye P.C.
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