Magnetic rail shunt with variable resistor
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United States of America Patent
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Nov 3, 2020
Grant Date -
Apr 26, 2018
app pub date -
Oct 23, 2017
filing date -
Oct 24, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A magnetically clampable rail shunt (1) comprising two magnetic clamps (10), each clamp having a magnetic device for attaching the clamp to one of two parallel railway rails (R1, R2) of a railway track by magnetic force, and an electrical conductor (20) electrically connecting the two magnetic clamps (10) for shunting the two parallel railway rails. The rail shunt (1) is characterised by a variable electrical resistor assembly (30) for adjusting the electrical resistance of the rail shunt (1), said variable electrical resistor assembly (30) being connected in series between the two magnetic clamps (10) via said electrical conductor (20). Preferred application to testing of track circuits.
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