Signals and indicators – Periodic – Animal frightening devices
Patent
1984-03-29
1986-07-08
Frankfort, Charles E.
Signals and indicators
Periodic
Animal frightening devices
116 23, 446180, 446199, 446310, 40412, G08B 1500, G09F 1908
Patent
active
045986606
ABSTRACT:
A device for scaring birds thereby aiding in the prevention of crop destruction due to the birds feeding thereon comprises in combination an actuator, such as an air gun which ejects at increased velocity a gaseous stream in a predetermined path, a frame including a target disposed in an impinging relationship to the gaseous stream path so as to be moved between rest and operative positions responsive to the gaseous stream, and visual scaring member operatively connected to the target for scaring birds, the visual member being reciprocally operable between inactive and active positions in response to the target being moved between the rest and operable position, respectively. According to another embodiment of the present invention, automatic controls are provided for disabling the device during night hours and/or during periods of increased wind velocities which could potentially damage the device. Conversion of linear motion into rotary motion is provided by operative cooperation between guide rollers mounted to the piston of the visual member and a spiral track which is in fixed relationship to the visual member.
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Frankfort Charles E.
Worth W. Morris
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