John P Polackowyj

US Patent:

53383834, Aug 16, 1994

Filed:

May 6, 1992

Appl. No.:

7/879783

Inventors:

John Polackowyj - Fair Oaks CA

Assignee:

Aerojet General Corporation - Rancho Cordova CA

International Classification:

B29C 6500

US Classification:

156 80

Abstract:

A ceramic fiber fabric such as an alumino-boro-silicate fabric is impregnated with a silicone elastomer to form a composite material. The fabric may be reinforced with hoops or rings to provide a free-standing insulation. The insulation is attached to the wall of a tank. The tank may be subjected to cryogenic temperatures such as during a cryostretch tank formation procedure, without cracking or spalling the insulation. The insulated tank can withstand exposure of elevated temperatures such as about 2000. degree. F.