Patent ID: 6863509

Claim:
For a microturbine engine having a compressor and a turbine mounted back to back, a shaft interconnecting the compressor and turbine, a segmented seal plate mounted in the space between the compressor and turbine and a brush seal affixed to the seal plate for defining a barrier between the compressor and turbine for sealing the leakage flow of fluid in said space flowing from said compressor toward said turbine and at least one hole in said seal plate located above said brush seal for flowing a predetermined amount of cooling flow to said turbine so that other microturbine engines of the same model will have substantially the same engine efficiency of said microturbine engine, wherein said segmented seal plate is generally U-shaped in cross section having a first arm located adjacent the compressor and a second arm located adjacent said turbine, said first arm being radially longer than said second arm and said brush seal being affixed to said first arm.