Elastomeric railway tie pad

Railways: surface track – Deadening noise

Reexamination Certificate

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Reexamination Certificate

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10984588

ABSTRACT:
An elastomeric member is arranged beneath a railroad tie to adjust the modulus of track over a relatively stiff structure such as a bridge or tunnel. Methods or combinations that include an elastomeric member are employed to reduce the modulus of a track over a relatively stiff structure to a magnitude approximating the modulus of track over the terrain surrounding the structure.

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Charity Sasaoka et al., “Evaluations of Track Damping Pads and Track Designs for Reducing Impacts at Special Trackwork”, Technology Digest, Feb. 2004, pp. 1-4, Issue No. TD-04-002, Transportation Technology Center, Inc.
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