Railways: surface track – Ties – Forms
Reexamination Certificate
2006-03-14
2006-03-14
Le, Mark T. (Department: 3617)
Railways: surface track
Ties
Forms
C238S083000
Reexamination Certificate
active
07011253
ABSTRACT:
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.
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Kerstein James
Nosker Thomas
Renfree Richard
Simon Louis
Le Mark T.
Millen White Zelano & Branigan P.C.
Polywood Inc.
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