Earth piercing apparatus

Details Earth piercing apparatus Earth piercing apparatus

1997-09-05

1999-09-14

Neuder, William

Boring or penetrating the earth

Boring without earth removal

E21B 708

Patent

active

059507390

ABSTRACT:
An earth piercing apparatus comprising a metal drive tool having a pointed forward end and an axially extending cavity at a rear end. The cavity includes a forward chamber and a female thread in an inner wall of the cavity adjacent the chamber for receiving a forward end of a driving rod having a male nesting end engaging a laterally extending stop surface in the chamber and a male thread mating with the female thread in the cavity. An end of the rod remote from the drive tool forms a driving end for receiving axial impulses for propelling the apparatus in a forward direction through soil to form a uniform hole in the soil.

REFERENCES:
patent: 102647 (1870-05-01), Ayres et al.
patent: 674191 (1901-05-01), Allen et al.
patent: 740521 (1903-10-01), Brown
patent: 903126 (1908-11-01), Beall, Jr.
patent: 2472120 (1949-06-01), Murphy
patent: 4974687 (1990-12-01), Kayes

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