Static structures (e.g. – buildings) – Composite prefabricated panel including adjunctive means – Having separate attached – elongated edging or stiffener
Patent
1987-02-09
1989-01-24
Murtagh, John E.
Static structures (e.g., buildings)
Composite prefabricated panel including adjunctive means
Having separate attached, elongated edging or stiffener
52232, 428921, E04C 234
Patent
active
047993499
ABSTRACT:
In order to provide a steel door with a fire rating sufficient to satisfy the Fire Regulations in North America which require in the fire rating endurance test that the temperature of the unexposed side of the steel door not to rise by more than 250.degree. F. over a period of one hour, the steel door is provided with a high density bonded mineral fiber sheet as its core which is bonded to the inside surfaces of the steel sheets forming the outside surfaces of the door by a binder comprising a mixture of an alkali metal silicate and a mineral powder selected from aluminium trihydrate and wollastenite, the powder being present in an amount sufficient to cause said binder on being subjected to high temperature to intumesce thus protecting said sheet against the heat.
REFERENCES:
patent: 427362 (1890-05-01), Rapp
patent: 1581038 (1926-04-01), Thompson
patent: 2593050 (1952-04-01), Paul et al.
patent: 3566564 (1971-03-01), Gaeth et al.
patent: 3570199 (1971-03-01), Gartner
patent: 3819518 (1974-06-01), Endler
patent: 3920603 (1975-11-01), Stayner et al.
patent: 4043862 (1977-08-01), Roberts
patent: 4074015 (1978-02-01), Franz et al.
patent: 4102794 (1978-07-01), Gandini et al.
patent: 4104828 (1978-08-01), Naslund et al.
patent: 4282687 (1981-08-01), Teleskivi
patent: 4365001 (1982-12-01), Meyer et al.
patent: 4663204 (1987-05-01), Langham
Murtagh John E.
Radixx World, Ltd.
Rudy Andrew Joseph
LandOfFree
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