Railroad track rail

Details Railroad track rail Railroad track rail

1976-02-09

1978-03-21

Hoffman, Drayton E.

Railways: surface track

Stringers

Concrete

238 7, 238 84, 238151, 238243, E01B 338

Patent

active

040798895

ABSTRACT:
A rail track that reduces noise and vibration for particular use in rapid transit and subway lines. The track is formed of a conventional rail embedded in a pre-stressed concrete bed. Sections of such jacketed rails are joined together by means of flanges, one of which is welded to one side of each rail end, with the bolt holes in the flanges and the joined rails oriented at an angle to axes of the rails so as to transfer a tension load between each rail of a joint. The pre-stress tension wires of the concrete bed extend beyond the ends of each section and are individually joined by turnbuckles or other tension creating couplers. The bottom of each concrete bed section is mounted on a solid sheet of rubber or other elastomer.

REFERENCES:
patent: 950930 (1910-03-01), Laudahn
patent: 1316645 (1919-09-01), Potenski
patent: 1820911 (1931-09-01), Henderson
patent: 3369334 (1968-02-01), Berg
patent: 3550850 (1970-12-01), Sonneville
patent: 3687346 (1972-08-01), Crimp et al.
patent: 3762641 (1973-10-01), Schubert
patent: 3907200 (1975-09-01), Bernard
patent: 3952468 (1976-04-01), Soum

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