Pest and insect expeller of an electromagnetic type
OwnerMichael Liuinventor
Life of this patent
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Abstract
A structure of an pest and insect expeller of an electromagnetic type comprises astable multivibrator circuits an electromagnetic sound generator, a heat dissipation system, and conductor power wires, wherein the astable multivibrators produce a series of intermittent and varying signals. The electromagnetic sound generator makes use of the inductance of an electromagnetic field to create physical vibrations, resulting in electromagnetically vibrated sound waves. The sound waves are delivered by the medium of conductor power wires to all indoor power lines and ground wires connected to the apparatus of the invention, and are distributed all over room corners, cracks on walls, and gaps so that insects will feel uncomfortable and get out of hidden places, as a result, the apparatus can achieve its effect.
Claims6
A pest and insect expeller, comprising:
- means for supplying electrical power;
- means including a first astable multi-vibrator circuit connected to the power supply means for producing a series of intermittent waveforms;
- means including a transistor circuit connected to an output of the first astable multi-vibrator circuit for producing a continuously variable voltage in response to said intermittent waveform;
- means including a second astable multi-vibrator circuit connected to the transistor circuit for producing a series of varying frequency pulse-width modulated waveforms in response to said continuously varying voltage;
- an electromagnetic sound generator;
- means including a triac connected to the electromagnetic sound generator and to an output of the second astable multi-vibrator circuit for activating the electromagnetic sound generator in response to said varying pulse-width modulated waveforms, said sound generator including a plurality of inductance coils connected to said triac;
- a fireproof casing for housing at least said electromagnetic sound generator;
- and
- means for dissipating heat resulting from the activation of said electromagnetic sound generator.
Dependencies are inferred from the claim text.