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Burglarproof device for vehicle

  • US 7,449,988 B2
  • Filed: 09/17/2003
  • Issued: 11/11/2008
  • Est. Priority Date: 03/17/2003
  • Status: Expired due to Term
First Claim
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1. A burglarproof device for a vehicle comprising:

  • a portable transmitter having a first switch which transmits a preset first ID code;

    an activation unit for the vehicle which receives the first ID code from the portable transmitter and collates the first ID code with a prestored second ID code, such that a locked state of a vehicle operation device for the vehicle is released when the activation unit receives the first ID code; and

    an engine operation restraining unit which disables an engine operation based on a signal from the activation unit,wherein the signal from the activation unit is sent after the vehicle operation device has been released in response to the receipt of the first ID code by the activation unit, andwherein the signal to disable the engine operation is sent by the activation unit if a time period between the release of the vehicle operation device by the activation unit and a detection of a start of the engine operation exceeds a first time period.

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