Rail pads

Railways: surface track – Rail seats – Cushions

Patent

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Details

238382, 267141, E01B 968

Patent

active

051956799

ABSTRACT:
A rail pad comprises a membrane (3) from opposite faces of which there project protrusions (4, 5), which may be ribs, possibly extending along the pad, perhaps over its whole length, or studs. The protrusions are such that no line perpendicular to the membrane passes through more than one of the protrusions. The pad is such that it is stiffer on one side than the other, for example because the ratio between the total area of protruding material and the total area of membrane free of protrusions is greater at the stiffer side of the pad than the other. The pad is preferably made of thermoplastic copolyester elastomer.

REFERENCES:
patent: 3026224 (1962-03-01), Rogers, Jr.
patent: 3311331 (1967-03-01), Steimen
patent: 3369753 (1968-02-01), Olson
patent: 4254908 (1981-03-01), Matsubara
patent: 4618093 (1986-10-01), Young et al.
patent: 4648554 (1987-03-01), McQueen
patent: 4771944 (1988-09-01), Brister et al.

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