Heat insulated door

Details Heat insulated door Heat insulated door

1978-03-27

1980-01-15

Perham, Alfred C.

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Movably interconnected

5230911, 523099, 52403, 52580, 52802, E06B 316, E04B 162

Patent

active

041833937

ABSTRACT:
Closure panel having high heat insulative capacity. There has been designed for a building opening a closure having a higher heat insulative capacity than has previously been available. There are provided inner and outer panels of high structural strength, such as steel, with means providing for the physical connection with thermal separation thereof. The space between said panels is filled with a foam material, foamed in place, which further provides for the mechanical connection but thermal separation of said inner and outer panels.

REFERENCES:
patent: 3137973 (1964-06-01), Williams
patent: 3153817 (1964-10-01), Pease, Jr.
patent: 3336713 (1967-08-01), Privas
patent: 3353318 (1967-11-01), Bacher
patent: 3386209 (1968-06-01), Starcevic
patent: 3760548 (1973-09-01), Sauer et al.
patent: 3837134 (1974-09-01), DiFazio
patent: 3941180 (1976-03-01), Thill
patent: 3967671 (1976-07-01), Stanley et al.
patent: 4028859 (1977-06-01), Bellagamba
patent: 4119133 (1978-10-01), Wolf

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