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1. AU1997013700 - Apparatus for reducing the presence of birds, particularly in airport areas

Office
Australie
Numéro de la demande 13700/97
Date de la demande 11.12.1996
Numéro de publication 1997013700
Date de publication 30.10.1997
Type de publication A
CIB
A01M 29/16
ANÉCESSITÉS COURANTES DE LA VIE
01AGRICULTURE; SYLVICULTURE; ÉLEVAGE; CHASSE; PIÉGEAGE; PÊCHE
MCAPTURE OU PIÉGEAGE DES ANIMAUX OU ÉPOUVANTAILS; APPAREILS DE DESTRUCTION D'ANIMAUX OU DE PLANTES NUISIBLES
29Épouvantails ou dispositifs répulsifs, p.ex. pour oiseaux
16utilisant des ondes sonores
CPC
A01M 29/16
AHUMAN NECESSITIES
01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
MCATCHING, TRAPPING OR SCARING OF ANIMALS
29Scaring or repelling devices, e.g. bird-scaring apparatus
16using sound waves
Déposants Spacecontrol S.R.L.
Inventeurs Renier, Giordano
Données relatives à la priorité VE96A0002 12.02.1996 IT
Titre
(EN) Apparatus for reducing the presence of birds, particularly in airport areas
Abrégé
(EN) An apparatus for reducing the presence of birds, particularly in airport areas, characterised by comprising: at least one amplitude modulator (61, 62) controlled by at least one generator (41, 43, 44) of carrier frequency (f1, f3, f4) and at least one generator (42, 45) of modulating frequency (f2, f5); at least one frequency modulator (63) controlled by at least one generator (46) of carrier frequency (f6) and at least one generator (47) of modulating frequency (f7); a mixer (8) for the output signals (141, 143, 143) of said amplitude modulators (61, 62) and frequency modulator (63); control means (161, 162, 163) for the input signals (141, 142, 143) to the mixer (8); a controlled gain amplifier (10) for the output signal (18) of the mixer (8); a power amplifier (11), fed by said controlled gain amplifier (10); at least one electro-acoustic transducer (13) fed by the output signal of said power amplifier (11); and a control unit (2) acting in random manner on the frequency (f1, f2, f3, f4, f5, f6, f7) of at least one frequency generator (41, 42, 43, 44, 45, 46, 47), on the input signals (141, 142, 143) of said mixer and on the gain of said controlled gain amplifier (10).
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