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Remote control apparatus

  • US 4,214,229 A
  • Filed: 11/16/1978
  • Issued: 07/22/1980
  • Est. Priority Date: 11/16/1978
  • Status: Expired due to Term
First Claim
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1. Apparatus for remotely controlling automatic apparatus by means of a user operated transmitter comprising:

  • (a) means for controlling the frequency of the transmitter;

    (b) a receiver for receiving signals from the transmitter within a predetermined frequency range;

    (c) means at the receiver for detecting receipt of a signal within the predetermined range and for transmitting back to the transmitter a signal indicating such receipt;

    (d) means at the receiver for detecting the duration of a signal received within the predetermined frequency range and for indicating when such a signal has been continuously so received for a predetermined period, and(e) means at the receiver responsive to signals detected as defined in (c) and (d) for energizing controls,whereby the user adjusts the frequency to come within the receiver'"'"'s range, the receiver informs the user when the frequency is correct, thereafter the user holds the signal for the predetermined duration and the receiver informs him when he has succeeded in so doing.

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