发明名称 |
Solid door having edges of laminated pressed wood fiber sheet material |
摘要 |
A solid board, specially adapted for use as a door with a long fire rating, comprising a fire resistant core material with edges thereon formed of a plurality of layers of sheet material of pressed wood fibers with a fire retardant added thereto. A fire door so constructed combines the advantages of a high fire rating and thick wooden edges for securely holding door mounting hardware.
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申请公布号 |
US4104828(A) |
申请公布日期 |
1978.08.08 |
申请号 |
US19770800785 |
申请日期 |
1977.05.26 |
申请人 |
CAL-WOOD DOOR |
发明人 |
NASLUND, EDWIN N.;MACDONALD, IAN |
分类号 |
E06B5/16;(IPC1-7):E04B1/94;B27K3/18 |
主分类号 |
E06B5/16 |
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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