US 5,896,696 A · Selective radio frequency pest control apparatus

Abstract

This application discloses an apparatus and method for generating and radiating energy at specific radio frequency wavelengths known to adversely affect the nervous systems of small insects such as flies, gnats, cockroaches, termites and the like wherein each is affected by a different frequency or range of frequencies; the apparatus containing a power supply, a voltage selector circuit for generating sequences of specific voltages, a modulator circuit to amplitude modulate each specific voltage about its center level, a multiple frequency generator to convert each modulated voltage into a modulated frequency of both fundamental and harmonic content, a radio frequency transmitter circuit, and a random interval timer circuit to energize and de-energize the radio frequency transmitter circuit in such a manner as to prevent the pest from acquiring an immunity to the radiated energy. There is further disclosed a method of forming patterns of radiated energy wherein said multiple frequency generator, said modulator circuit, said voltage selector circuit, said radio frequency transmitter circuit and said random interval timer circuit are operably connected in such a manner as to produce bursts of radio frequency energy at slightly varying fixed frequencies having both fundamental and harmonic content and wherein such bursts are continuously varied in both their interval and duration.

Claims20

Dependent claims

A pest control apparatus for generating radio frequency energy at selected frequencies that control pests, the apparatus comprising:

voltage selector means for providing a stepped signal having a level selected from a plurality of predetermined levels on a periodic basis, the voltage selector means comprising memory means for storing information for selecting the stepped signal level sequence and duration;
modulator means for amplitude modulating each level of the stepped signal;
frequency generating means for converting the amplitude modulated level of the stepped signal into a frequency modulated signal having fundamental and harmonic frequency content corresponding to the level of the stepped signal;
radio frequency transmitter means for transmitting radio frequency energy in response to the frequency modulated signal;
and
timer means for sequentially energizing and de-energizing the radio frequency transmitter means on a periodic basis.

3 more elements

Dependencies are inferred from the claim text.

Selective radio frequency pest control apparatus

Life of this patent

Selective radio frequency pest control apparatus

Life of this patent

Abstract

Claims20