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Alarm system for engine block heater

  • US 6,225,893 B1
  • Filed: 06/19/2000
  • Issued: 05/01/2001
  • Est. Priority Date: 06/21/1999
  • Status: Expired due to Fees
First Claim
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1. An alarm system for detecting and warning an operator of a motor vehicle of a vehicle starting condition, comprising:

  • a circuit having means for connection to a warning device and to a power source;

    a proximity detector connected to said circuit and having means to detect a condition in a block heater cord of a motor vehicle without electrically connecting to said block heater cord, and means, connected to said circuit, to selectively operate said warning device upon detecting said condition; and

    means for holding a block heater cord near said proximity detector;

    such that a condition in a block heater cord of a motor vehicle is detectable thereby without drawing power from said block heater cord, and a warning device is operable to timely warn an operator of said motor vehicle relative to said condition.

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