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Device for keeping under control a population of selected species of insects

  • US 4,275,523 A
  • Filed: 03/14/1979
  • Issued: 06/30/1981
  • Est. Priority Date: 03/24/1978
  • Status: Expired due to Term
First Claim
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1. A device for use in keeping insect infestations under control;

  • said device comprising;

    at least one trap,electrical conductor means on said at least one trap,a high voltage generator,said electrical conductor means being connected across the output of said voltage generator and being so formed as to produce an electrical discharge when an insect above a given size comes into contact with said electrical conductor means,radio transmitter means,discharge detector means operable to detect electrical discharges across said electrical conductor means and to enable, in response thereto, and for a limited time period, operation of said radio transmitter means,radio receiver means for receiving signals transmitted by said radio transmitter means,an impulse counter means connected to the output of said radio receiver means, said impulse counter means operating to count each time said transmitter means is operated, whereby to provide an indication, at a location remote from said trap of the number of insects trapped thereby, andan astable circuit interposed between said high voltage generator and an electrical voltage source therefor, said astable circuit operating to feed said high voltage generator from said voltage source at spaced intervals,wherein said high voltage generator includes;

    an oscillator,a first step-up transformer having a primary winding and a secondary winding, the output of said oscillator being connected to said primary winding of said step-up transformer,a first capacitor,the secondary winding of said first step-up transformer being connected to said first capacitor,a trigger unit and a circuit interruptor,a second step-up transformer having a primary winding and a secondary winding, said trigger circuit controlling the connection of said first capacitor to said primary winding of said second step-up transformer through said circuit interruptor,a second capacitor connected across said secondary winding of said second step-up transformer and said electrical conductor means of said at least one trap, anda diode connected between said secondary winding of said second step-up transformer and one terminal of said second capacitor.

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