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Portable audible beacon

  • US 5,898,363 A
  • Filed: 03/05/1997
  • Issued: 04/27/1999
  • Est. Priority Date: 03/05/1997
  • Status: Expired due to Fees
First Claim
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1. A portable audible beacon comprising:

  • a housing;

    a signal generating means mounted in the housing for generating an oscillating signal that is periodically interrupted by a zero signal, where the fundamental frequency of the oscillating signal corresponds to a frequency of high auditory sensitivity to the human ear either greater than or equal to 2000 Hz, where the frequency of interruption of the oscillating signal corresponds to a directionally discernible frequency to the human ear less than 2000 Hz, and where the period of duration of each zero signal is either less than or about the same as the period of duration of the oscillating signal between each zero signal; and

    an acoustic transducer mounted in the housing for receiving the signal generated by the signal generating means and for converting it into sound.

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