Research/Patents/US 4704332
US 4704332

LIGHTWEIGHT FIBER REINFORCED HIGH TEMPERATURE STABLE GLASS-CERAMIC ABRADABLE SEAL

Assignee

UNITED TECHNOLOGIES CORPORATION

Filed

Nov 1, 1982

Granted

Nov 3, 1987

Location

PORTLAND CT US

Abstract

A composite material suitable for use as an abradable seal is described. The seal comprises a high temperature stable fiber reinforced glass or glass-ceramic matrix base having at least one layer of abradable ceramic material, plasma sprayed or bonded to it. The ceramic abradable layer has a working temperature up to at least 3000° F. (1648° C.) and is oxidatively stable. The abradable seal has particular utility in a gas turbine engine.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Apr 24, 1984

Rescinded

Jun 18, 1986

Duration

2 years, 1 month

Inventor

  • 1JOHN J. BRENNAN

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records