Apparatus for applying a pumpable material to a rail head
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United States of America Patent
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Nov 19, 2013
Grant Date -
Jan 1, 2009
app pub date -
Jun 18, 2008
filing date -
Jun 27, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
An applicator assembly for delivery of a pumpable material to a top surface of a rail head of rail includes an applicator body having an orifice for delivery of the pumpable material to the top surface of the rail. The body is resiliently yieldable to permit the applicator body to move from a raised position, in which the orifice is positioned for delivering the pumpable material to the top surface of the rail head, to a depressed position in the event the applicator is contacted by a train wheel. The applicator body thereafter returns to the raised position. The applicator body is mounted for movement between a working position in which the applicator body is closely adjacent the rail head and a rail-service position in which the applicator body is remote from the rail head. When the applicator body is in its working position, a metal portion of the applicator body contacts the rail head to form a metal-on-metal hard seal extending lengthwise of the rail head for inhibiting leakage of the pumpable material from the top of the rail head. The applicator assembly is free of any non-metal seals for sealing against such leakage.
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