Railroad switch machine

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9889867
APP PUB NO 20170183021A1
SERIAL NO

14980861

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Importance

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Abstract

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A railroad switch machine includes a pair of switch blades, an electric motor mechanically coupled to the pair of switch blades, a pair of input terminals connected to a DC power supply for receiving a power signal and a regulator to adapt the power signal between the input terminals into a motor current applied to the electric motor. The regulator includes a plurality of switches connected between the pair of input terminals and two phases of the electric motor. The switches are transistors and the regulator also includes a controller adapted to drive each transistor with a respective command signal to adjust a value and a direction of an intensity of the motor current.

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First Claim

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Patent Owner(s)

  • ALSTOM TRANSPORT TECHNOLOGIES

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Johnson, Bruce V Pittsford, US 16 205

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