Light-weight concrete door

Details Light-weight concrete door Light-weight concrete door

1997-03-04

1999-01-19

Friedman, Carl D.

Static structures (e.g., buildings)

Composite prefabricated panel including adjunctive means

Sandwich or hollow with sheet-like facing members

52601, 526563, 52232, 109 83, 49503, E04B 100

Patent

active

058602682

ABSTRACT:
A three-hour fireproof door (20) is made from a metal frame (26), a body (28), and a hinge (30). The body (28) is made from a concrete mix (40). The metal frame (26) is such that, when attached to a mold base (34), the body (28) may be cast in place. The concrete mix (40) contains an integral strengthening material (54) in the form of either a metal mesh (54) or an elastomer admixture (82).

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patent: 5050507 (1991-09-01), Shoyat
patent: 5055252 (1991-10-01), Zimmerman
patent: 5065558 (1991-11-01), Boatsman
patent: 5181961 (1993-01-01), Umaki et al.
patent: 5483771 (1996-01-01), Herbst

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