Stock material or miscellaneous articles – All metal or with adjacent metals – Width or thickness variation or marginal cuts repeating...
Reexamination Certificate
2007-08-14
2007-08-14
McNeil, Jennifer (Department: 1775)
Stock material or miscellaneous articles
All metal or with adjacent metals
Width or thickness variation or marginal cuts repeating...
C428S539500, C428S600000, C428S680000, C428S213000, C416S174000
Reexamination Certificate
active
10735504
ABSTRACT:
The invention provides spray coatings to achieve circumferentially non-uniform seal clearances in turbomachines. In steam and gas turbines it is desirable to assemble the machines with elliptical seal clearances to compensate for expected casing distortion, rotordynamics or phenomena that cause circumferentially non-uniform rotor-stator rubs. The claimed invention allows the casing hardware to be fabricated round, and a spray coating is applied to the radially inner surface such that the coating thickness varies circumferentially, providing the desired non-uniform rotor-stator clearance during assembly.
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Ghasripoor Farshad
Kowalczyk Mark William
Turnquist Norman Arnold
DiConza Paul J.
General Electric Company
McNeil Jennifer
Powell, III William E.
Savage Jason L.
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