×

Electronic alarm for avoiding collision with animals in a non-destructive manner

  • US 5,278,537 A
  • Filed: 07/27/1992
  • Issued: 01/11/1994
  • Est. Priority Date: 07/27/1992
  • Status: Expired due to Term
First Claim
Patent Images

1. A device for dispersing, in a non-destructive manner, animals capable of hearing sounds at ultrasonic frequencies, said device comprising:

  • a) a sound transducer operable to generate sounds at ultrasonic frequencies;

    b) electrical means for electrically actuating said transducer to generate, in a sequential manner, at least first and second pluralities of sound waves at predetermined, varying ultrasonic frequencies, said electrical means generates said first pluralities of ultrasonic sound waves at varying frequencies for a predetermined first discrete time period followed by said second plurality of ultrasonic sound waves at varying frequencies for a second predetermined discrete time period, said first and second time periods being equal, whereby an ultrasonic warble effect of a siren is generated by said transducer to confuse and disperse said animal; and

    ,c) a source of electrical power for actuating said electrical means.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×