Railroad tie plugging system
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United States of America Patent
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Mar 20, 2018
Grant Date -
Oct 8, 2015
app pub date -
Apr 8, 2015
filing date -
Apr 8, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Systems and methods for automated repair and maintenance operations on a railroad track comprise a work head that is automatically moved over the railroad track according to a predetermined pattern, such as the movement of an applicator for tie plugging compound according to a predetermined pattern of spike holes. The automated repair and maintenance operations may be coupled to systems and methods for automatically detecting a feature on a railroad track that comprise two or more distance measurement sensors that travel over the railroad track. Features on the railroad track are detected where the distance measured by each sensor falls within two different predetermined distance ranges.
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