US3683113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic animal sound generator and method
Assignee: SANTA RITA Tech Inc
•
Filing: 1971-01-11
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Granted: 1972-08-08
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Expires: 1991-01-11
Abstract
Abstract A circuit for generating signals in the audio frequency range which signals contain effective parts of animal calls. Because the signals are of relatively narrow bandwidth, the apparatus is uncomplex.
Inventors
- 👤 John L Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:57
CPC Classifications
G; G08; G08B; G08B3/00; G08B3/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
90 words
Apparatus controlling animals by beaming irregular sound at them comprising means for generating a carrier signal in a frequency range of about 500 hz to about 5,000 hz, means for overmodulating the amplitude of the carrier signal to turn the carrier signal on and off at a rate in the range of about 50 to 300 hz, means for interrupting the carrier signal at a rate of at least about once per second, and an electroacoustic transducer for converting the modulated and intermittently interrupted carrier signal to a sound signal.
Claim 2
Dependent Claim
90 words
Apparatus controlling animals by beaming irregular sound at them comprising means for generating a carrier signal in a frequency range of about 500 hz to about 5,000 hz, means for overmodulating the amplitude of the carrier signal to turn the carrier signal on and off at a rate in the range of about 50 to 300 hz, means for interrupting the carrier signal at a rate of at least about once per second, and an electroacoustic transducer for converting the modulated and intermittently interrupted carrier signal to a sound signal.
Claim 3
Dependent Claim
123 words
A synthetic animal sound generator for subjecting animals to irregular, nonrepetitive sound sIgnals to affect the animals and prevent the adaptation of the animals to the sound comprising: means for generating a carrier signal in a frequency range of about 500 hz to about 5,000 hz, means for overmodulating the amplitude of the carrier signal at a frequency of between about 50 to about 300 hz so that the carrier signal is intermittently silenced to thereby generate a plurality of signal pulses, means for interrupting the modulated carrier signal at a rate in the range of about one to five times per second, and means for converting the modulated and intermittently interrupted carrier signal to a sound signal for transmission to the animals.
Claim 4
Dependent Claim
123 words
A synthetic animal sound generator for subjecting animals to irregular, nonrepetitive sound sIgnals to affect the animals and prevent the adaptation of the animals to the sound comprising: means for generating a carrier signal in a frequency range of about 500 hz to about 5,000 hz, means for overmodulating the amplitude of the carrier signal at a frequency of between about 50 to about 300 hz so that the carrier signal is intermittently silenced to thereby generate a plurality of signal pulses, means for interrupting the modulated carrier signal at a rate in the range of about one to five times per second, and means for converting the modulated and intermittently interrupted carrier signal to a sound signal for transmission to the animals.
Claim 5
Dependent Claim
20 words
Apparatus according to claim 2 wherein the interrupting means includes means for gradually interrupting and reinstating the modulated carrier signal.
Claim 6
Dependent Claim
42 words
Apparatus according to claim 2 wherein the interrupting means includes means for maintaining transmission of the modulated carrier signal to the sound generating means for a period of time sufficient to transmit to said converting means a plurality of said signal pulses.
Claim 7
Dependent Claim
20 words
Apparatus according to claim 3 including means for varying the frequency of the overmodulated signal through about a two-to-one range.
Claim 8
Dependent Claim
35 words
Apparatus according to claim 2 including means for varying the frequency of the carrier signal over a frequency range of about the same order of magnitude as the frequency range of the overmodulated carrier signal.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |