Pumps – Motor driven – Fluid motor
Reexamination Certificate
2005-03-08
2005-03-08
Tyler, Cheryl J. (Department: 3746)
Pumps
Motor driven
Fluid motor
C417S113000, C417S366000, C417S373000, C417S369000
Reexamination Certificate
active
06863509
ABSTRACT:
A segmented seal plate supporting a brush seal mounted in the space between the compressor and turbine and bearing against the shaft of a microturbine engine form a barrier in this cavity and serves to control flow in this space. A plurality of circumferentially spaced discretely sized holes in the seal plate judiciously located above the brush seal bearing against the shaft interconnecting the back-to-back mounted compressor/turbine controls the amount of cooling air so that the combination of the brush seal, segmented plate and discretely sized holes controls the leakage from the compressor of each engine of a given model and controls cooling flow to the turbine for reducing efficiency scatter from engine to engine.
REFERENCES:
patent: 2918207 (1959-12-01), Moore
patent: 4725206 (1988-02-01), Glaser et al.
patent: 5233824 (1993-08-01), Clevenger
patent: 5664413 (1997-09-01), Kington et al.
patent: 6053699 (2000-04-01), Turnquist et al.
Elliott Energy Systems, Inc.
Friedland Norman
Solak Timothy P.
Tyler Cheryl J.
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