Acoustic fish behavioral control device
Patent 4646276 Issued on February 24, 1987. Estimated Expiration Date: 
April 7, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 7, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorsApplicationNo. 06/848752 filed on 04/07/1986US Classes:367/139, Animal control367/142Exclusive-type transmitterExaminersPrimary: Farley, Richard A.Attorney, Agent or FirmInternational ClassesA01K 15/00 (20060101)A01K 15/02 (20060101) A01K 79/02 (20060101) A01K 79/00 (20060101) G10K 9/10 (20060101) G10K 1/072 (20060101) G10K 9/00 (20060101) G10K 1/00 (20060101) AbstractAn acoustic device for eliciting either attraction or repulsion behavioral responses in fish comprises a water tight enclosure having a radiating surface rigidly supported in one end thereof. Drive means for the radiating surface are provided with the capability of causing the radiating surface to vibrate at its resonant frequencies so that an acoustic signal is generated capable of a peak sound pressure level of at least 0.5 kPa (0 to peak) at a distance of 3 meters from the radiating surface. The signal generated has one fundamental frequency component in the range 20 to 1000 Hz and a plurality of resonant and harmonic frequencies associated with said fundamental frequency. The drive means, radiating surface and enclosure coact to generate an acoustic signal having characteristics such as resonant frequencies, peak pressures and temporal patterns which may be selectively optimized to produce the desired behavioral response.Other References
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