Vibratory drill head apparatus

Details Vibratory drill head apparatus Vibratory drill head apparatus

1998-12-24

2000-10-10

Johnson, Brian L.

Boring or penetrating the earth

Tool actuation by reaction of rotating eccentric mass

173 49, E21B 724

Patent

active

061291595

ABSTRACT:
A vibratory drill head for use with a drill stand apparatus. The eccentric cams are mounted on parallel drive shafts which are powered by hydraulic motors. The hydraulic motors cause the drive shafts to spin in opposite directions. The counter-rotating eccentric cams eliminate horizontal vibration and maximize vertical vibration. The vibratory drill head is mounted to a drill shaft such as a sample tube. When the vibrating drill shaft is lowered into the soil, the vibrations allow the sample tube to pierce the soil to collect the sample. The minimization of horizontal vibration produces accurate core samples.

REFERENCES:
patent: 3004389 (1961-10-01), Muller
patent: 3368632 (1968-02-01), Lebelle
patent: 3379263 (1968-04-01), Bodine
patent: 3583497 (1971-06-01), Kossowski
patent: 4113034 (1978-09-01), Carlson
patent: 4625811 (1986-12-01), Tuenkers
patent: 5004055 (1991-04-01), Porritt et al.
patent: 5058688 (1991-10-01), Scott et al.
patent: 5417290 (1995-05-01), Barrow

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