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Key for selectively allowing access to an enclosure

  • US 20020024420A1
  • Filed: 06/27/2001
  • Published: 02/28/2002
  • Est. Priority Date: 08/12/1998
  • Status: Abandoned Application
First Claim
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1. A key for wirelessly powering and selectively allowing access to an enclosure identified by an enclosure identification, the enclosure having an otherwise unpowered enclosure lock controller to control an electric enclosure lock mechanism, the key and the lock controller in two-way communication for transmitting and receiving variable signals for validating that the key is authorized to access the enclosure, the variable signals being alternately transmitted between the key and the lock controller to deter detection and duplication of the variable signals to prevent unauthorized access to the enclosure, the key comprising:

  • a) a housing;

    b) a processor located within the housing, the processor operative to build the variable signals for transmission from the key to the lock controller and to interpret the variable signals received by the key from the lock controller;

    c) a storage device located within the housing in communication with the processor, the storage device operative to store data for building and interpreting the variable signals being alternately transmitted between the key and the lock controller for validating that the key is authorized to access the enclosure;

    d) a data transmitter located within the housing in communication with the processor, the data transmitter operative to wirelessly transmit signals from the key to the lock controller, to inductively transmit an access request signal to the lock controller upon proper alignment with the lock controller, and to transmit an interrogation response signal in response to receiving to a variable interrogation request;

    e) a data receiver located within the housing in communication with the processor, the data receiver operative to receive the variable interrogation signal; and

    f) a power transmitter located within the housing in communication with the processor for wirelessly transmitting power to the lock controller, the power transmitter and the data transmitter simultaneously wirelessly transmitting data and power to the lock controller.

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