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    • 34. 发明授权
    • Square embossed roof and rib plate
    • 方形压花屋顶和肋板
    • US07284933B2
    • 2007-10-23
    • US10457840
    • 2003-06-09
    • Frank Calandra, Jr.Jack R. EatonJohn C. StankusEugene H. StewartDemrey G. Brandon
    • Frank Calandra, Jr.Jack R. EatonJohn C. StankusEugene H. StewartDemrey G. Brandon
    • E02D29/045
    • E21D11/155E21D21/0086Y10T428/24653
    • Disclosed is a mine roof and rib support system generally including a square bearing plate. A through hole is positioned near a center portion of the square bearing plate. A peripheral section at least partially circumscribes the bearing plate. In between the through hole and the peripheral section is a rib member area. The rib member area may include two rib members with a convex cross-section connected by a substantially linear surface member disposed between the two rib members, two or more concave ribs with a substantially linear surface member disposed between the two rib members, or two substantially linear surfaces connected by a convex rib member. A safety edge surrounds the square bearing plate. The safety edge may be a rolled edge, a looped edge, a folded edge, or another comparable edge. Also disclosed is a method for making the mine roof and rib support system.
    • 公开了一种通常包括方形轴承板的矿井屋顶和肋支撑系统。 通孔位于方形轴承板的中心部分附近。 外围部分至少部分地包围支承板。 在通孔和周边部分之间是肋构件区域。 肋构件区域可以包括两个肋构件,其具有通过布置在两个肋构件之间的基本线性的表面构件连接的凸形横截面,两个或更多个凹肋,其具有设置在两个肋构件之间的基本线性的表面构件, 通过凸肋构件连接的线性表面。 安全边缘围绕方形轴承板。 安全边缘可以是卷边,环形边缘,折叠边缘或另一相当的边缘。 还公开了一种用于制造矿顶和肋支撑系统的方法。