Vibratory earth penetrator with synchronized air lance control

Details Vibratory earth penetrator with synchronized air lance control Vibratory earth penetrator with synchronized air lance control

1985-07-24

1987-05-26

Leppink, James A.

Boring or penetrating the earth

Tool actuation by reaction of rotating eccentric mass

175213, 175215, 175317, 175393, 175424, E21B 718, E21B 724

Patent

active

046677500

ABSTRACT:
A vibratory earth penetrator employing a high pressure air distributor and an oscillating mechanism has the ability to dig down to underground utilities and contact those utilities without damaging them. The invention includes a hollow elongated tube having a plurality of air lances at the bottom end thereof. The air is preferably distributed to the air lances by an air distributor in a criss-cross sequence. An oscillating eccentric weight is synchronized with the air distributor to enhance the digging effect of the device. The penetrator is supported by a boom which includes an automatic tension device for providing sufficient upward force to keep the penetrator in the vertical attitude while allowing the weight of the penetrator to provide enough force to permit the device to dig into the ground. Since the digging action is accompanied by very little downward force, it is possible to contact underground utilities without hurting them.

REFERENCES:
patent: 2743586 (1956-05-01), Berther et al.
patent: 3216512 (1965-11-01), Grable
patent: 3216514 (1965-11-01), Nelson
patent: 3851490 (1974-12-01), Matowshita
patent: 4266619 (1981-05-01), Bodine
patent: 4548281 (1985-10-01), Bodine

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