Sound-damping mat, especially for a ballast bed

Details Sound-damping mat, especially for a ballast bed Sound-damping mat, especially for a ballast bed

1990-12-13

1991-10-29

Oberleitner, Robert J.

Railways: surface track

Deadening noise

238283, 238 2, E01B 1900

Patent

active

050608568

ABSTRACT:
The upper part of an elastomeric mat acting as a sound-damping element below a bed of ballast in a track support assembly is provided with a single layer of a knit, preferably a multiaxial warp knit fabric which, in part, protects the body of the mat against deterioration by penetration of the stones therethrough and provides high tensile strength in substantially all directions for the mat.

REFERENCES:
patent: 4056161 (1977-11-01), Allen, Jr.
patent: 4235371 (1980-11-01), Kohler
patent: 4247586 (1981-01-01), Rochlin
patent: 4403677 (1983-09-01), Messinger
patent: 4500037 (1985-02-01), Braitsch et al.
patent: 4627199 (1986-12-01), Capaul
patent: 4696429 (1987-09-01), Ortwein
patent: 4720043 (1988-01-01), Ortwein
patent: 4848514 (1989-07-01), Snyder
A. Reisfeld, Warp Knit Engineering, 1966 Copyright, Chapter 1.

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