Rotary kinetic fluid motors or pumps – Working fluid bypass
Reexamination Certificate
2007-07-31
2007-07-31
Nguyen, Ninh H. (Department: 3745)
Rotary kinetic fluid motors or pumps
Working fluid bypass
C415S145000, C415S211200, C029S889220
Reexamination Certificate
active
10713641
ABSTRACT:
A gas turbine engine compressor has a number of shroud rings, at least a bleed one of which defines a number of bleed ports. A structural hub is downstream of the shroud rings and secured relative to the shroud rings. A structural hub case extends from an aft joint with the structural hub to a fore joint with a joined one of the shroud rings and has a number of valve ports. At least a portion of the structural case extends structurally between the fore and aft joints. A valve element is shiftable between first and second conditions for respectively blocking and not blocking communication through the valve ports.
REFERENCES:
patent: 4827713 (1989-05-01), Peterson et al.
patent: 6092987 (2000-07-01), Honda et al.
patent: 6755025 (2004-06-01), Eleftheriou et al.
patent: 6802691 (2004-10-01), Chlus
patent: 2005/0008486 (2005-01-01), Malmborg
Cummings Kevin J.
Demers Christopher G.
Hodgson James C.
Merry Brian
Suciu Gabriel
Bachman & LaPointe P.C.
Nguyen Ninh H.
United Technologies Corporation
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