Drilling device utilizing sonic resonant torsional rectifier

Details Drilling device utilizing sonic resonant torsional rectifier Drilling device utilizing sonic resonant torsional rectifier

1976-04-30

1977-05-17

Purser, Ernest R.

Boring or penetrating the earth

Natural vibration characteristic of an element of boring...

175106, 408 17, 408700, E21C 306

Patent

active

040236285

ABSTRACT:
Torsional sonic energy is generated by means of a sonic generator and coupled to an elastic member to cause torsional resonant vibration thereof. The output of the torsional resonant member is coupled through an acoustic rectifier device to a drilling bit to simultaneously provide both torsional and vertical drive components to the bit to effect a spiral "screw" type driving action thereof. The rectifier action results in unidirectional high level pulses of the resonant sonic energy to the bit, causing the bit to be driven both rotatably and downwardly in a pulsating manner.

REFERENCES:
patent: 2713992 (1955-07-01), Snyder
patent: 2906502 (1959-09-01), Smith
patent: 2911192 (1959-11-01), Boucher
patent: 3468384 (1969-09-01), Bodine
patent: 3480092 (1969-11-01), Reinold
patent: 3610347 (1971-10-01), Diamantides
patent: 3633688 (1972-11-01), Bodine

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