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System and method for vehicle theft-prevention

  • US 7,586,401 B2
  • Filed: 02/17/2006
  • Issued: 09/08/2009
  • Est. Priority Date: 02/18/2005
  • Status: Active Grant
First Claim
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1. A system for preventing theft of a semi trailer having a trailer brake system, said system comprising:

  • a controller for operation upon the trailer brake system, said controller operating in a first configuration to lock the trailer brake system, and said controller operating in a second configuration to release the trailer brake system upon authorization of an authorized party;

    at least one sensor for outputting a signal based on a characteristic of the semi trailer; and

    a processor for receiving the signal from the sensor and directing the operation of the controller to lock or release the trailer brake system in response to the characteristic of the semi trailer;

    wherein the controller for operation upon a trailer brake system comprises at least one motorized air control valve or three-way solenoid valve.

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