FIRE RESISTANT ATTIC STAIRS
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United States of America
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Issued Date -
Dec 12, 2024
app pub date -
Jun 11, 2024
filing date -
Jun 11, 2024
priority date (Note) -
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status (Latency Note)
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Abstract
Attic stairs are constructed out of a box, a ladder, a box closing hatch, so that the ladder is suspended from attic stairs box using hinges and the closing hatch is suspended from the ladder. The closing hatch features a stratified structure, including an inner layer located between two rigid outer strata, where the inner layer is entirely filled with a fire resistant material.
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