Resilient ballast underlayment mat including nonwoven fiber flee

Details Resilient ballast underlayment mat including nonwoven fiber flee Resilient ballast underlayment mat including nonwoven fiber flee

1986-02-21

1988-01-19

Reeves, Robert B.

Railways: surface track

Roadbed

428285, 404 31, E01B 100, B32B 1702

Patent

active

047200430

ABSTRACT:
A road bed for railway rails comprises a ballast underlayment mat in the form of a body of elastomeric material. The mat has, at its bottom, prominent projecting parts of the elastomeric material and is covered by stone ballast. At least one fiber fleece layer on the top of the mat limits penetration of the stone ballast into the elastomeric material.

REFERENCES:
patent: 2165955 (1939-07-01), Haarhoff
patent: 3568579 (1971-03-01), Hoad
patent: 3587964 (1971-06-01), Cork
patent: 4025686 (1977-05-01), Zion
patent: 4235371 (1980-11-01), Kohler
patent: 4311273 (1982-01-01), Marsh
patent: 4353947 (1982-10-01), Northcut
patent: 4362780 (1982-12-01), Marzocchi et al.
patent: 4368844 (1983-01-01), Miller

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