Seismic rodent control device

Details Seismic rodent control device Seismic rodent control device

1977-05-27

1978-06-27

Wilbur, Maynard R.

Communications: electrical

Selective

Having electron beam device

43124, H04B 1100

Patent

active

040978389

ABSTRACT:
A generator vibrates low frequency sound vibrations and magnetic fields with superimposed high frequency noise which upsets the habits of rodents and most burrowing animals. The sounds are transmitted to the ground by the generator being connected to a pipe or shaft embedded in the ground, to buildings, structures or to water pipes which run underground. The circuitry permits random frequencies to be generated at random intervals by the use of cycling thermostats in circuit with the sound generator. The thermostats cycle due to the heat of the coils or resistors or from an electronic randomizing control circuit.

REFERENCES:
patent: 1953677 (1934-04-01), Glover
patent: 3891962 (1975-06-01), White

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