Deer repellent system

Details Deer repellent system Deer repellent system

1995-10-30

1997-02-11

Hofsass, Jeffery

Communications: electrical

Audible indication

Ultrasonic pest control

3403841, 340573, 116 22A, G08B 300

Patent

active

056025238

ABSTRACT:
An animal repelling system, especially for deer which generates a square wave signal output in the ultrasonic frequency range, and which has a piezo-electric driver utilizing a horn type device that produces harmonic distortion so that at any given time the fundamental frequency and harmonic distortion is present in the audio output, and the system is capable of frequency switching to at least 10 different frequencies.

REFERENCES:
patent: 4566085 (1986-01-01), Weinberg
patent: 4641054 (1987-02-01), Takahata et al.
patent: 4998091 (1991-03-01), Rezmer
patent: 5061918 (1991-10-01), Hunter
patent: 5278537 (1994-01-01), Carlo et al.
patent: 5418518 (1995-05-01), Schenken et al.

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