Railways: surface track – Rail seats – With anchor in concrete
Patent
1988-08-02
1990-05-15
Kashnikow, Andres
Railways: surface track
Rail seats
With anchor in concrete
238270, 238271, 238283, 238298, 238304, E01B 968
Patent
active
049250949
ABSTRACT:
A concrete railroad tie has rail seats defined by plates, which are made from stainless steel or other non-corrodable metal or plastic, cast into the top surface of the tie at the rail seats. The stiffness of the plates should be less than that of the concrete body of the tie and they should have smooth top faces so that they do not cause scuffing of associated rail pads on which the rails rest at the seats. Each plate may have lugs projecting from its underside for providing a mechanical connection with the body of the tie.
REFERENCES:
patent: 801278 (1905-10-01), Terwilleger
patent: 1045741 (1912-11-01), Pinney
patent: 1058435 (1913-04-01), Hyle
patent: 3062450 (1962-11-01), Hanff
patent: 3129887 (1964-04-01), Meier
patent: 3826424 (1974-07-01), McClung et al.
patent: 3904112 (1975-09-01), Thim et al.
patent: 4494695 (1985-01-01), Sonneville
Costain Concrete Company Limited
Kashnikow Andres
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