Turbine seal rub protection means

Details Turbine seal rub protection means Turbine seal rub protection means

1994-12-07

1996-03-05

DePumpo, Daniel G.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 55, 4151745, F16J 1548

Patent

active

054960460

ABSTRACT:
In a compressible rotating machine having stationary and rotating elements and employing seal teeth between the stationary and rotating elements capable of being rubbed, worn and damaged by the rotating elements, the improvement which comprises providing a small patch of hard, cutting or grinding material on a small portion of the rotating elements disposed in opposition to the seal teeth and capable of intermittent cutting of the seal teeth during temporary contact so as to avoid mushrooming or of melting of the teeth and to leave them sharp and thin and to prevent grooving of the surface of the rotating elements.

REFERENCES:
patent: 3836156 (1974-09-01), Dunthorne
patent: 4814236 (1989-03-01), Qureshi et al.
patent: 5137422 (1992-08-01), Price et al.
patent: 5211535 (1993-05-01), Martin et al.

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