Railways: surface track – Roadbed – Street crossing
Patent
1988-04-19
1990-02-13
Kashnikow, Andres
Railways: surface track
Roadbed
Street crossing
238 9, E01B 2528
Patent
active
048999326
ABSTRACT:
An improved highway grade crossing for railroad tracks. The crossing is comprised of a plurality of wood panels which are capped with an expanded polymer. The polymer provides a wear surface for the crossing which can be replaced without having to take up the entire crossing structure. In one embodiment the polymer cap is a rubber and steel composite. The steel keeps the rubber stretched to substantially avoid temperature induced expansion and buckling of the rubber. Deterioration resulting from vehicular traffic over a buckled surface is thus avoided.
REFERENCES:
patent: 1849048 (1932-03-01), Crampton
patent: 3465963 (1969-09-01), Caillet et al.
patent: 4232823 (1980-11-01), Eggermann
patent: 4421272 (1983-12-01), Whitlock
patent: 4445640 (1984-05-01), Caillet
patent: 4545527 (1985-10-01), Young
Beachy Dale K.
Dehls Robert B.
Owen S. Hudson
Simpson James H.
Kashnikow Andres
Koppers Industries, Inc.
Newholm Timothy
Rooney Rita M.
Zeh, Jr. Herbert J.
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