초록 ▼

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

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.

대표청구항 ▼

In a heat insulative door, the combination comprising: inner and outer metallic panels approaching but not contacting each other at opposite first and second edges thereof; first sealing means of highly heat insulative material positioned between said panels at said first and second edges for preven

In a heat insulative door, the combination comprising: inner and outer metallic panels approaching but not contacting each other at opposite first and second edges thereof; first sealing means of highly heat insulative material positioned between said panels at said first and second edges for preventing the escape of flowable material from within said panels outwardly thereof; second sealing means closing opposite third and fourth edges of said panels; heat insulative foamed material inserted under pressure into the space between said inner and outer panels and prevented from escaping therebetween by said first and second sealing means, the combination being further comprised in that said panels approach each other at said first and second edges with outer surfaces in turn carrying reversely bent parallel portions extending inwardly of said door and terminating in flanges extending away from each other, said first sealing means having an elongate base element extended inwardly of said door along and snugly between said parallel portions and an inner cross element on the inward end thereof lying against said flanges and an outer cross element on the outward end thereof lying against said outer surfaces, said foamed material bearing against said flanges and said inner cross element to urge same snugly together in a tight seal.