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US 5,730,357 AGranted
Railroad tie pad
AssigneeAirboss of America Corp.
InventorsViktor Besenschek, Robert L. Hagerman
Life of this patent
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Abstract
A railroad tie pad comprises a hard polymer frame which defines a central cavity. An elastomeric insert fills the cavity and is secured to the frame. One side of the frame is wider than an opposing side.
Claims17
A railroad tie pad adapted to support a railway rail having a base width and base edges on a railroad tie, the tie pad comprising:
- a hard non-metallic frame defining a central cavity and having a pair of opposed sides disposed generally parallel to the base edges but close enough to each other so as to support the base edges when the rail is supported by the pad, and
- an elastomeric insert, secured to the frame and filling the central cavity, wherein the width of the elastomeric insert is less than the base width whereby when the tie pad rests upon the tie and the rail is mounted upon the tie pad, forces acting laterally on the rail will urge the rail to bear primarily against the frame and not the insert.
Dependencies are inferred from the claim text.