Title: High temperature compressible support and gasket material

Abstract: A high-temperature compressible material especially useful in rocket motors to support nozzle ring inserts, the material including a binder which when pyrolyzed leaves a char having substantial strength, and fillers including carbonaceous fillers such as carbon fibers, wools, powders, etc., plus a special filler comprising hollow carbon microspheres which can crush to provide a compressibility to the material when it is confined in a volume-limiting environment, plus other fillers which may be added to obtain special yield characteristics.

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Inventors: Olcott, Eugene L. (Falls Church, VA, US)
Abrams, Edwin F. (Silver Spring, MD, US)

Application Number: 474399
Filing Date: 1974-05-30
Publication_date: 1979-12-25
Assignee: Versar, Inc. (Springfield, VA)
Primary Class(es): 239/265.43 60/909, 277/651, 277/936, 428/313.3, 428/408
Other Classes:
US Patent Ref:

3112614	Dec, 1963	Ellenburg et al.	239/265.
3133411	May, 1964	McCorkle	60/205.
3142960	Aug, 1964	Bluck	138/44.
3285519	Nov, 1966	McKagu, Jr.	239/265.
3524794	Aug, 1970	Jonnes et al.	428/308.

Other Refs:
Primary Examiner: Bentley, Stephen C.
Assistant Examiner:
Attorney: Dowell & Dowell