Fishing – trapping – and vermin destroying – Miscellaneous
Patent
1993-09-21
1995-06-20
Rowan, Kurt
Fishing, trapping, and vermin destroying
Miscellaneous
116 22A, A01M 2900
Patent
active
054251923
ABSTRACT:
The device comprises a housing featuring a transparent window behind which is positioned an infrared detector. A disc in the same plane as that of the front face of the housing can rotate around its central axis perpendicular to said plane. The visible side of the disc shows a pattern of a color in contrast with that of the disc, such as black over white background or vice-versa. If the infrared detector signals the presence of a heat-emitting source, such as the one given out by the body of a bird on a surface to be protected, a dissuasive process for birds is activated which combines disc rotation and sound emission. The disc rotation creates the illusion of the presence of the eye of a bird of prey, while the sound emission includes cries like those of birds in distress, or cries or a feared bird of prey.
REFERENCES:
patent: 2788762 (1957-04-01), Wright
patent: 3412394 (1968-11-01), Lewis
patent: 4598660 (1986-07-01), Konzak
patent: 4656770 (1987-04-01), Nuttle
patent: 4745859 (1988-05-01), Kyoung
European Patent Office Abstracts of Japan, vol. 13, No. 158 (C-568) Apr. 17, 1989-Abstract for Japanese patent JP63317036 (published Dec. 26, 1988).
European Patent Office Abtracts of Japan, vol. 14, No. 270 (C-727) Jun. 12, 1990-Abstract for Japanese patent JP279927 (published Mar. 20, 1990).
Aiello Jeffrey P.
Pagel Donald J.
Rowan Kurt
Spit Ecopic Line
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