Vault door and mix for casting same

Details Vault door and mix for casting same Vault door and mix for casting same

1990-02-20

1991-09-24

Wolfe, Robert L.

Safes, bank protection, or a related device

Wall and panel structures, closures and closure adjuncts

Walls and panels

106 99, C04B 702, E04B 284

Patent

active

050505076

ABSTRACT:
A burglary resistant cast door assembly for use in a burglary resistant vault is cast of a concrete mix consisting essentially of Type 1 cement from about 21.6 to 25.4 percent by weight; sand from about 31.5 to 37.2 by weight; #8 gravel from about 30.7 to 36.8 by weight; a water reducer from about 0.4 to 0.7 by weight; steel fiber from about 2.3 to 5.1 by weight; and water from about 3.8 to 5.4 by weight.

REFERENCES:
patent: 4377977 (1983-03-01), Wurster
patent: 4559881 (1985-12-01), Lankard
patent: 4565840 (1986-01-01), Kobayashi
patent: 4588443 (1986-05-01), Bache
patent: 4593627 (1986-06-01), Lankard
patent: 4615280 (1986-10-01), Shoop

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