Movable or removable closures – With means mounting closure for swinging – Unitary structural member and hinge element
Patent
1976-03-25
1978-04-18
Kannan, Philip C.
Movable or removable closures
With means mounting closure for swinging
Unitary structural member and hinge element
49368, 49388, 49488, 49501, E05D 700
Patent
active
040843475
ABSTRACT:
An improved door suitable for use in industrial plants and other such areas where the door is to be opened and closed by objects or vehicles which strike the side of the door. The door has a hollow body provided with a monolithic construction and is formed from a moldable material which is highly resistant to impact forces exerted thereon. The body is filled with a foamed-in-place insulating material and has reinforcing means at spaced locations therein to maintain the shape of the door. Gasket structure is used at one or more margins of the door, and the door is to be swingably mounted on an adjacent door jamb.
REFERENCES:
patent: 1701214 (1929-02-01), Raymond
patent: 2930086 (1960-03-01), Griffiths
patent: 3056475 (1962-10-01), Benham
patent: 3142095 (1964-07-01), Sawyer
patent: 3161925 (1964-12-01), Bertolini
patent: 3320699 (1967-05-01), Carson et al.
patent: 3384996 (1968-05-01), Gilchrist et al.
patent: 3407536 (1968-10-01), Nystrom
patent: 3498001 (1970-03-01), MacDonald
patent: 3885351 (1975-05-01), Imperial et al.
patent: 3950894 (1976-04-01), DiMaio
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