Railways: surface track – Rail seats – Cushions
Patent
1979-08-20
1981-03-10
Bertsch, Richard A.
Railways: surface track
Rail seats
Cushions
E01B 968
Patent
active
042549086
ABSTRACT:
A tie-pad assembly is disclosed which includes a rail; a tie and a rectangular tie-pad plate made of relatively soft elastic rubber material having a plurality of longitudinal grooves provided on upper and lower surfaces thereof. A first pair of cutaway portions are formed in lower side edges of the plate in the longitudinal direction of the rail. The tie-pad plate is disposed between the rail and the tie and is provided with a first pair of reinforcement members made of relatively hard elastic rubber material. These members are each formed with an extending portion to be inserted into the first cutaway portions, and a pressure receiving portion having a height somewhat lower than the maximum thickness of the tie-pad plate. The members are integrally coupled to the tie-pad plate by vulcanization; and an aerial gap is formed between the members and the tie-pad plate when assembled, the gap extending along the top surface of the assembly.
REFERENCES:
patent: 2996256 (1961-08-01), Moses
patent: 3189279 (1965-06-01), Horniblow
patent: 3369753 (1968-02-01), Olson
patent: 3417922 (1968-12-01), Vaulry
patent: 3549090 (1970-12-01), Toyama
Bertsch Richard A.
Tokai Rubber Industries Ltd.
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