Railways: surface track – Miscellaneous
Patent
1979-11-09
1981-05-05
Cannon, James C.
Railways: surface track
Miscellaneous
14 73, 238 2, 405131, 405258, 428 77, 428172, 428189, 428209, 428212, 428215, 428220, 428284, 428287, 428317, 104 1R, B32B 506, B32B 526, E01B 344
Patent
active
042653983
ABSTRACT:
A variable thickness fabric mat for use in railroad track structures, and particularly at stress transition zones in the railroad track; the mat is preferably formed of non-woven, multi-layered fabric, with the layers connected together, as for instance by needle punching to form an integral member. The mats are applicable for use with poor load bearing soils, and form a generally stepped, resilient bed for conventional railroad track structure, to help support and progressively spread the stress from the wheeled traffic, over a wider area. The mats provide for effective passing of runoff water, and aid in drainage of water from the soil beneath the mats, to thus improve the track support. The invention also provides a method of forming a railroad track construction so as to spread the stress from wheeled traffic at stress transition zones, over wider areas.
REFERENCES:
patent: 2827412 (1958-03-01), McKay
patent: 3402227 (1968-09-01), Knee
patent: 3587964 (1971-06-01), Cork
patent: 3598680 (1971-08-01), Lee
patent: 3670506 (1972-06-01), Goudard
patent: 3765996 (1973-10-01), Munyon
Cannon James C.
True Temper Corporation
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