Research/Patents/US 4803837
US 4803837

DUAL CYCLE GAS TURBINE ENGINES

Assignee

ROLLS-ROYCE PLC

Filed

Mar 8, 1977

Granted

Feb 14, 1989

Location

Abstract

A gas turbine includes a change-over valve having a rotatable part and a static part. The valve is disposed between upstream and downstream compressors of the engine for selectively directing flows from the upstream compressor and an auxiliary inlet to the downstream compressor or an auxiliary outlet, the downstream static part of the valve being formed as a structural element of the engine casing from which extends forwardly a support member which carries bearings for supporting the forward rotating part of the valve and the casing of the compressor.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Mar 11, 1983

Rescinded

Jul 27, 1988

Duration

5 years, 4 months

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records