METHOD FOR REPELLING BIOLOGICAL CREATURES Russian patent published in 1999 - IPC

FIELD: agriculture, in particular, equipment for acting upon animals such as rodents. SUBSTANCE: method involves providing repellent action in the form of repeated pulses of optical radiation with wave length of 180-2,000 nanometers and width of spectral range of from 10^-5 to 1.8 10³ nanometers. Optical radiation brightness temperature is at least 3,000 K with pulse time of 10^-8 to 10^-1 sec at half-height. Radiation pulse frequency may be changed in accordance with specific law. Acoustic vibration pulses may be generated in synchronism with optical radiation pulses. EFFECT: increased efficiency in repelling animals and simplified method. 3 cl, 3 dwg