Tractor-trailer coupling detection

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United States of America Patent

PATENT NO 8704650
SERIAL NO

12987204

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Importance

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Abstract

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To test whether a trailer is coupled to a tractor when the tractor ignition switch is off, a test switch in the trailer connects a high-impedance power source in a trailer to a line carrying energy from the tractor ignition switch to the trailer's electrical load, and measures the voltage at the line. A high voltage indicates a connection only to the electrical load in the trailer and thus a decouple. A low voltage indicates a measurement of the electrical loads in both trailer and tractor and hence a coupling.

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Patent Owner(s)

  • STARTRAK INFORMATION TECHNOLOGIES, LLC

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Perten, Herbert Suffern, US 17 162
Schicke, Robert Denville, US 3 33

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