发明名称 |
Vault door and mix for casting same |
摘要 |
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.
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申请公布号 |
US5050507(A) |
申请公布日期 |
1991.09.24 |
申请号 |
US19900481223 |
申请日期 |
1990.02.20 |
申请人 |
LINDSAY CONCRETE PRODUCTS CO., INC. |
发明人 |
SHOYAT, LESLIE |
分类号 |
C04B28/02;E05G1/024 |
主分类号 |
C04B28/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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