Thermally regulated segmented seal

Details Thermally regulated segmented seal Thermally regulated segmented seal

1992-04-28

1993-06-08

Will, Thomas B.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 27, 277136, 277157, F16J 1532

Patent

active

052172325

ABSTRACT:
A segmented seal for a rotating member such as a shaft of a gas turbine engine. The seal includes a housing disposed about the shaft which housing receives a seal member formed from a suitable material such as carbon or ceramic having a bore receiving a shaft defining a shaft interface. The seal is axially restrained within the housing. A thermal control member extends annularly around the shaft and engages a surface of the seal. The thermal control member has a coefficient of expansion greater than that of the seal so that upon heating, the thermal control member will exert a force on the seal to lift the seal from the shaft so that the seal is self-adjusting to accommodate varying operating speeds and temperatures.

REFERENCES:
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patent: 2149524 (1939-03-01), Hunn
patent: 2917329 (1959-12-01), Laser
patent: 2937039 (1960-05-01), Santapa
patent: 2948555 (1960-08-01), Wright
patent: 3277797 (1966-10-01), Tyree, Jr. et al.
patent: 3333855 (1967-08-01), Andresen
patent: 4405134 (1983-09-01), Sargent
patent: 4722534 (1988-02-01), Wentworth
patent: 5014999 (1991-05-01), Makhobey

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