Fire-resistant composite wood structure particularly adapted for

Details Fire-resistant composite wood structure particularly adapted for Fire-resistant composite wood structure particularly adapted for

1978-08-04

1980-05-20

Murtagh, John E.

Movable or removable closures

With means mounting closure for swinging

Hinge leaf mounted on closure edge surface

428 45, 428326, 428921, E04B 194, B27K 318

Patent

active

042032555

ABSTRACT:
A composite wood material, specially adapted for use as part of a door with a long fire rating, comprising a board material made of wood chips and fire-retardant chemicals and one or more sheets of material of pressed wood fibers with a fire retardant added thereto, designed to optimize resistance to penetration by fire, increase screw holding ability, resist splitting and minimize cost.

REFERENCES:
patent: 3535199 (1970-10-01), Kuhr
patent: 3887415 (1975-06-01), Elmendorf

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