Seal means

Details Seal means Seal means

1982-12-20

1984-06-12

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 42, F16J 1536

Patent

active

044537220

ABSTRACT:
For a twin spool gas turbine engine that utilizes a carbon seal. A bellows is supported to bias the carbon seal against its seal plate and a back-up seal consisting of a piston ring is located in the balance diameter of the carbon seal to maintain its loading in the event the bellows fail.

REFERENCES:
patent: 3391942 (1968-07-01), Wilson
patent: 3515394 (1970-06-01), Stevens
patent: 3977685 (1976-08-01), Greenawalt

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