Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1989-07-17
1990-10-23
Swann, III, Glen R.
Communications: electrical
Condition responsive indicating system
Specific condition
340573, 367139, H04B 102, G08B 1500
Patent
active
049655523
ABSTRACT:
An electronic animal repellant apparatus includes a microphone for detecting environmental sound, a detection circuit for detecting the presence of a particular species of animal in the vicinity of the repellant apparatus, a timing and activation circuit, and a plurality of animal repellant or frightening devices. The microphone produces an input signal fed to the detection circuit that has a frequency content representative of the frequency spectrum of the environmental sound. The input signal is compared to a pre-determined frequency envelope characteristic of the sound spectrum of the particular animal species and a trigger signal is produced when the presence of the particular animal is detected. The detection circuit includes a band-pass filter and a negative feedback band-reject filter, each having readily removable and replaceable components for changing the pre-determined frequency envelope for different species of animal to be repelled. The trigger signal is provided to the timing and activation circuit which provides signals to activate one or more of the plurality of animal frightening devices. The timing and activation circuit includes circuitry to provide a random delay in activation of the frightening device, a random duration of activation, and a random sequence of activation of more than one of the plurality of devices.
REFERENCES:
patent: 2806082 (1957-09-01), Woods
patent: 3113304 (1963-12-01), Lindley
patent: 4219884 (1980-08-01), DeSantis
patent: 4306228 (1981-12-01), Meyer
patent: 4625083 (1986-11-01), Poikela
patent: 4656770 (1987-04-01), Nuttle
patent: 4658386 (1987-04-01), Morris
patent: 4706069 (1987-11-01), Tom et al.
patent: 4769794 (1988-09-01), Beuter et al.
Adams John O.
Price Charles S.
LandOfFree
Electronic animal repellant apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electronic animal repellant apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic animal repellant apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-769462