Laminated non-combustible board for forming ductwork and headers

Details Laminated non-combustible board for forming ductwork and headers Laminated non-combustible board for forming ductwork and headers

1992-12-08

1994-08-23

Cuomo, Peter M.

Static structures (e.g., buildings)

Gable or eave terminal construction

With conduit or passage means

52631, 52799, E04B 700

Patent

active

053395778

ABSTRACT:
The present invention relates to a laminated structural sheet material or board having a planar configuration and comprising a hollow core portion and metallic foil exterior surfaces especially useful for forming ductwork, headers and deflectors in heating and cooling systems. The sheet material is substantially moistureproof, smokeproof and fireproof for forming such ductwork, headers and deflectors in combination with ceiling and/or floor joists and flooring materials, the material or board being readily bendable and having scored edges for attachment to wooden ceiling and/or floor joists in planar or angled relation.

REFERENCES:
patent: 2101836 (1937-12-01), Benedict
patent: 2221309 (1940-11-01), Gazelle
patent: 3449157 (1969-06-01), Wandel
patent: 3731449 (1973-05-01), Kephart
patent: 3803784 (1974-04-01), Becker
patent: 4070839 (1978-01-01), Clem
patent: 4704837 (1987-11-01), Menchetti et al.

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