Sensor and apparatus for positioning railroad tie plates along a railroad track and method
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United States of America Patent
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May 21, 2013
Grant Date -
May 19, 2011
app pub date -
Nov 5, 2010
filing date -
Nov 23, 2007
priority date (Note) -
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Abstract
A method for positioning a replacement railroad tie plate along a railroad, comprising the steps of positioning a carrier vehicle on a railroad track, positioning a feed conveyor on the railroad track for movement with the carrier vehicle, moving a sensor assembly in a longitudinal direction of the feed conveyor and relative to a release point a first distance based upon a second distance between two adjacent ties, moving the carrier vehicle and the feed conveyor along the railroad track, detecting an in-service tie plate with the sensor assembly and, actuating a gate assembly upon the detection of the in-service tie plate.
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