Elastic mat for a ballast bed underlayment

Details Elastic mat for a ballast bed underlayment Elastic mat for a ballast bed underlayment

1985-07-11

1987-09-29

Cannon, James C.

Railways: surface track

Roadbed

238382, 404 28, 404 71, 405 16, 405 19, E01B 200, E01B 1900, E01C 306, E01C 518

Patent

active

046964290

ABSTRACT:
A mat comprising an elastic material which serves as an underlay for a ballast bed of crushed stone, metallic particles, or the like is provided with a plurality of projections on its underside and with an upper layer of a material different from the elastic material. This upper layer on the upper side of the mat advantageously comprises a strong fabric. Particularly the upper layer may comprise a multilayered fabric with inlay layers of elastic material positioned between the individual layers of the multilayer fabric as well as a coverying layer of a softer material on the upper surface of the upper layer of the mat. The fabric of the upper layer of the mat advantageously comprises a water and rot resistant plastic material, such as a polyamide.

REFERENCES:
patent: 4302197 (1981-11-01), Kimura et al.
patent: 4428698 (1984-01-01), Murphy
patent: 4487814 (1984-11-01), Hollaway
patent: 4500037 (1985-02-01), Braitsch et al.
patent: 4556338 (1985-12-01), Fahey

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