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Electronic door locking system for an automotive vehicle

  • US 4,486,806 A
  • Filed: 04/29/1982
  • Issued: 12/04/1984
  • Est. Priority Date: 04/30/1981
  • Status: Expired due to Term
First Claim
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1. A door locking system for an automotive vehicle for locking vehicle doors, which comprises:

  • (a) a means for generating a door-locking signal;

    (b) an ignition switch for outputting an ignition-off signal when the engine of the vehicle is not operating;

    (c) a door-close switch for outputting a door-close signal when all of the vehicle doors are closed;

    (d) a timer connected to said door-close switch for outputting a timer signal a predetermined period after the vehicle doors are closed;

    (e) an AND gate;

    input terminals of which are connected to said means for generating a door-locking signal, said ignition switch and said timer for outputting a door locking-command signal when the ignition-off signal is outputted and one of the door-locking signal and the timer signal is outputted thereto; and

    (f) a door lock actuator connected to said AND gate for locking the vehicle doors in response to the door-locking command signal outputted from said AND gate.

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