发明名称 Mine stopping and braces therefor
摘要 A mine stopping installed in a mine passageway includes a plurality of elongate panels extending generally vertically in side-by-side relation from a floor to a roof of the passageway to at least partially close the passageway. A generally horizontal elongate brace extends generally between the walls of the passageway adjacent to the panels. A generally vertical column extends from the floor to the roof and is adapted for reinforcing the brace. Braces and anchor beams for stoppings are also disclosed.
申请公布号 US2003147706(A1) 申请公布日期 2003.08.07
申请号 US20030353854 申请日期 2003.01.29
申请人 JACK KENNEDY METAL PRODUCTS & BUILDINGS, INC. 发明人 KENNEDY WILLIAM R.;KENNEDY JOHN M.
分类号 E21F1/10;(IPC1-7):E02D3/02;E21F1/14 主分类号 E21F1/10
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