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Lighted enhanced bullhorn

  • US 5,859,915 A
  • Filed: 04/30/1997
  • Issued: 01/12/1999
  • Est. Priority Date: 04/30/1997
  • Status: Expired due to Fees
First Claim
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1. A method for supplying directional sound and light from a voice projection device by indirectly generating at least one new sonic frequency which is a difference of at least two interacting ultrasonic frequencies, the method comprising the steps of:

  • a) emitting from a perimeter of the projection device at least one first ultrasonic frequency along a direction which is in alignment with a directional orientation of the projection device;

    b) emitting from the projection device a second ultrasonic frequency by means which cause the second ultrasonic frequency to interact with the first ultrasonic frequency to generate the new sonic frequency, wherein the second ultrasonic frequency has a frequency equal to the at least one first ultrasonic frequency plus at least one sideband corresponding to the at least one new sonic frequency;

    c) directing a light from within the perimeter of the projection device along the directional orientation toward a common target area with the new sonic frequency; and

    d) propagating a desired message as the new sonic frequency.

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