发明名称 Engineered railroad ties
摘要 To increase the resistance of plastic and/or plastic composite railroad ties tosliding within the ballast of the railroad bed, for example, sliding lengthwise (in the direction of the longitudinal axis of the tie) and sideways (in the direction perpendicular to the longitudinal axis), ties with a textured surface which aids in anchoring the ties within the ballast of the railroad beds. In particular, the ties are provided with a pattern of indentations within a surface that contacts the ballast which increases the ties resistance to sliding. The pattern is molded into the ties so as to mechanically interact with the ballast (rocks) and provide as much resistance to sliding as possible, especially along the longitudinal axis of the tie but also in the direction perpendicular to the longitudinal axis.
申请公布号 US7011253(B2) 申请公布日期 2006.03.14
申请号 US20010985937 申请日期 2001.11.06
申请人 POLYWOOD, INC. 发明人 NOSKER THOMAS;RENFREE RICHARD;KERSTEIN JAMES;SIMON LOUIS
分类号 E01B3/00;E01B3/10;E01B13/00 主分类号 E01B3/00
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