Wheel sensor
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United States of America Patent
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Nov 26, 2013
Grant Date -
Sep 1, 2011
app pub date -
Oct 5, 2009
filing date -
Nov 5, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A wheel sensor that is particularly suited for track release signaling systems has at least one sensor device having an AC-fed sensor coil of an electric oscillating circuit sensitive to an inductive interaction of the sensor coil with passing wheels of rail vehicles. A further spool is connected to the sensor coil for suppressing external interference fields in a counter circuit. The further coil is arranged underneath the sensor coil and a spacing distance between the further coil and the sensor coil is at least one third of the inside diameter of the sensor coil.
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