Composite rail joint end post
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United States of America Patent
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Dec 6, 2011
Grant Date -
Aug 26, 2010
app pub date -
Feb 25, 2010
filing date -
Feb 25, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
An end post for a rail joint assembly comprising: a top portion having a profile substantially identical to cross-sectional shapes of rail head sections of first and second rails of the rail joint assembly; a base; and a stem disposed between the top portion and the base; wherein one or more of the top portion, base and stem comprise a plurality of pieces of a first electrically insulating material disposed on or in a second electrically insulating material. The plurality of pieces are preferably spaced apart and may have a substantially disc-shape or a substantially cylindrical-shape, and are preferably made from a ceramic material such as zirconium dioxide, aluminum oxide or silicon nitride, where the second electrically insulating material comprises a polymeric material, such as polyurethane.
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