Keyless entry system for automotive devices including steering lock device with compact, portable wireless code transmitter

  • US 4,761,645 A
  • Filed: 02/27/1985
  • Issued: 08/02/1988
  • Est. Priority Date: 03/01/1984
  • Status: Expired due to Term
First Claim
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1. A keyless entry system for an automotive vehicle for selectively operating various vehicle devices including a door lock mechanism and a steering lock mechanism, comprising:

  • a portable wireless transmitter adapted to transmit a unique code indicative signal encoded to carry a first preset unique code stored in said transmitteractuators, each associated with corresponding vehicle devices for operating the latter to a desired state, said actuators including a steering lock actuator associated with said steering lock mechanism for operating the latter between a locking state and an unlocking state;

    manual switches, manually operable for activating said keyless entry system and for signalling said keyless entry system to operate a corresponding one of said vehicle device; and

    a controller mounted on the vehicle and responsive to manual operation of at least one of said manual switches to transmit a demand signal for triggering said transmitter, and receiving said unique code indicative signal transmitted from said transmitter, said controller comparing the received unique code with a second preset code, and producing a control signal to be fed to one of said actuators corresponding to said at least one of said manual switches operated only when the received unique code matches said second preset code, for operating one of said vehicle devices corresponding to said at least one of said manual switches, said controller being detective of said transmitter moving out of a given transmission range from said vehicle to transmit said control signal to said steering lock actuator for performing a steering locking operation.

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