Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1978-11-27
1980-10-14
Ward, Jr., Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277235A, 277DIG6, 415172A, 415174, 428559, 75244, F01D 520, F01D 1108, F16J 1544
Patent
active
042277035
ABSTRACT:
An improved gas seal between a stationary member and a movable member, one of which includes an abrasive tipped projection directed toward a surface of the other, for example a turbine engine blade and a cooperating shroud member, is provided through an improvement in the abrasive tip. Such improved tip of the projection is a composite of inner and outer tip portions, the inner portion comprising an alloy resistant to oxidation, sulfidation and thermal fatigue at operating temperatures and the outer tip portion comprising a matrix entrapping a plurality of abrasive particles which protrude from the matrix toward the surface of the other member. The inner tip portion is bonded with the metallic body of the projection and the outer tip portion is deposited on the inner tip portion.
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Fairbanks Norman P.
Stalker Kenneth W.
Zelahy John W.
General Electric Company
Lawrence Derek P.
Sachs Lee H.
Ward, Jr. Robert S.
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