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    • 4. 发明授权
    • Curb forming machine and related methods
    • 遏制成型机及相关方法
    • US06450730B1
    • 2002-09-17
    • US09850306
    • 2001-05-07
    • Robert D. MatthiasJames E. Kirkland
    • Robert D. MatthiasJames E. Kirkland
    • E01C1122
    • E01C19/4893
    • The curb forming and extruding machine forms continuous concrete edging while reducing and/or substantially eliminating voids, flat spots or weak areas caused by smoothed sections in the packed concrete. Also, concrete bridging in the hopper, and the associated problems, are reduced and/or eliminated. The curb forming machine includes a plunger which is driven along a path of travel including a forward position to force the curb forming material from the lower hopper section into and through the curb extrusion mold, an upward position so that the plunger extends into the upper hopper section, and a rearward position away from the curb mold and in the lower hopper section. The plunger extending into the upper section of the hopper eliminates concrete bridging and also scores the concrete as it packs it into the mold.
    • 路边成型和挤出机形成连续的混凝土边缘,同时减少和/或基本上消除由包装混凝土中的平滑部分引起的空隙,平坦点或弱区域。 此外,减少和/或消除料斗中的混凝土桥接以及相关问题。 路边成型机包括沿着包括向前位置的行进路径被驱动的柱塞,以将来自下料斗部分的路缘石形成材料推入并通过路缘挤压模具,向上的位置,使得柱塞延伸到上料斗 以及远离路缘石模具和下料斗部分的向后位置。 延伸到料斗上部的柱塞消除了混凝土桥梁,并将混凝土包装在模具中,并将其分解。