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User activated fountain display

  • US 4,817,312 A
  • Filed: 02/18/1987
  • Issued: 04/04/1989
  • Est. Priority Date: 02/18/1987
  • Status: Expired due to Term
First Claim
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1. A user activated display fountain comprising:

  • a fountain pool;

    detection means disposed in said fountain pool for detecting underwater sound, including sound caused by a user throwing a predetermined object into said fountain pool, said detection means providing a first signal in response thereto;

    signal conditioning means couples to said detection means, said signal conditioning means being a means responsive to said first signal for providing a turn-on signal when said first signal has predetermined characteristics;

    fountain display control means coupled to said signal conditioning means and said display fountain, said fountain display control means being responsive to said turn-on signal to generate a display sequence in response to said turn-on signal.

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