发明名称 Concrete railroad grade crossing panels
摘要 A concrete railroad grade crossing comprised of a precast concrete gauge panel extending between the rails and precast concrete approach panels which extend between each rail and the roadway. Elastomeric gauge seals are provided on the opposite sides of the gauge panels for sealing the space between the sides of the gauge panels and the rails. Elastomeric approach seals are provided on the inner ends of the approach panels for engagement with the outer sides of the rails. The inner ends of the seals have lobes formed therein which are embedded in the respective panels.
申请公布号 US6764021(B1) 申请公布日期 2004.07.20
申请号 US20020147234 申请日期 2002.05.15
申请人 AMERICAN CONCRETE PRODUCTS CO. 发明人 BIRT RANDALL G.;EGAN THOMAS L.
分类号 E01C9/04;(IPC1-7):E01B21/00 主分类号 E01C9/04
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