Seal including a non-metallic abradable material

Details Seal including a non-metallic abradable material Seal including a non-metallic abradable material

1993-08-23

1995-02-14

Look, Edward K.

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

Between blade edge and static part

415197, F01D 1108

Patent

active

053889592

ABSTRACT:
A fan assembly for a gas turbine engine for aircraft has a stator casing made of a first material and an annular abradable seal structure made of a second material comprising an epoxy foam having heat expandable, thermoplastic microballoons filled with a chemical which expands when the second material is cured such that the second material bonds directly to the stator casing upon curing thereby minimizing the number of processing steps during manufacture.

REFERENCES:
patent: 3346175 (1967-10-01), Wiles
patent: 3519282 (1970-07-01), Davis
patent: 3547455 (1970-12-01), Daunt
patent: 3843278 (1974-10-01), Torell
patent: 3854843 (1974-12-01), Penny
patent: 4295787 (1981-10-01), Lardellier
patent: 4460185 (1984-07-01), Grandey
patent: 4536127 (1985-08-01), Rossmann et al.
patent: 5064727 (1991-11-01), Naik et al.

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