Fire resistant steel door with drop-in core
    1.
    发明授权
    Fire resistant steel door with drop-in core 失效
    耐火钢门与滴芯

    公开(公告)号:US5722213A

    公开(公告)日:1998-03-03

    申请号:US713605

    申请日:1996-09-13

    申请人: Steven M. Morency

    发明人: Steven M. Morency

    IPC分类号: E06B5/16

    摘要: A heat temperature rise door is made up of a steel shell and a core which is not bonded to the steel shell, thus eliminating much of the cost of manufacture of the door.

    摘要翻译: 热升温门由钢壳和不与钢壳结合的芯组成,从而消除了门的大量制造成本。