Railway road bed
AssigneeClouth Gummiwerke Aktiengesellschaft
InventorsHans Braitsch, Hermann Ortwein, Josef Vorwald
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Abstract
A railroad bed has an elastomeric mat which supports the ballast and on which the sleepers and rails are mounted. The mat has an upper surface formed by a metal or plastic sheet which prevents penetration of the ballast into the elastomeric body.
Claims11
In a railway track bed having a support surface, at least one resilient mat on said surface for cushioning and sound-damping, a layer of ballast on said mat, at least one sleeper received in said layer of ballast and a rail mounted on said sleeper, the improvement wherein the upper surface of said mat is provided with a hard elastic sheet of metal vulcanized to the mat and preventing penetration of said ballast into said mat.
In a railway track bed having a support surface, at least one resilient mat on said surface for cushioning and sound-damping, a layer of ballast on said mat, at least one sleeper received in said layer of ballast and a rail mounted on said sleeper, the improvement wherein the upper surface of said mat is provided with a hard elastic sheet preventing penetration of said ballast into said mat, said mat comprising a pair of slabs of elastomeric material having interfitting formations defining hollows between said slabs and oriented so as to transform compressive force upon said mat into shear forces between said slabs.
A mat adapted to support a layer of ballast in a railroad track bed, said mat comprising a body of elastomeric material overlain by a metal sheet bonded to said body and forming a barrier to penetration by said ballast, said body comprising a pair of slabs having interfitting formations shaped to transform compressive force on said mat into shear forces between said slabs and defining hollows between them.
Dependencies are inferred from the claim text.