Insulation cap for disappearing stairwells

Details Insulation cap for disappearing stairwells Insulation cap for disappearing stairwells

1980-08-14

1982-08-17

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

With insulation

Fire or heat shield

182 77, E06C 906

Patent

active

043445055

ABSTRACT:
A rigid block of insulative material, such as expanded polystyrene or having an R value of 19 is mounted above the opening in the ceiling in which a disappearing staircase is mounted. The block is so mounted as to be movable entirely or so that a portion thereof is movable between a first normally closed position to a second open position providing access through the ceiling opening.

REFERENCES:
patent: 2321499 (1943-06-01), Marschke
patent: 4151894 (1979-05-01), Edwards
patent: 4281743 (1981-08-01), Fuller

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