Drill adaptor

Details Drill adaptor Drill adaptor

1983-07-26

1987-01-27

Leppink, James A.

Boring or penetrating the earth

With tool shaft detail

Axially telescoping shaft section

403350, E21B 1700

Patent

active

046388745

ABSTRACT:
The invention provides an adaptor which comprises a hexagonal tail portion adapted to engage in a drilling machine, and a leading portion which is adapted to receive a circular drill rod in locking relationship. Sealing means is provided between the drilling machine and the adaptor and the latter and the drill rod.

REFERENCES:
patent: 2297390 (1942-09-01), Burger
patent: 2686660 (1954-08-01), Storm
patent: 2969250 (1961-01-01), Kull
patent: 3434369 (1969-03-01), Runkle
patent: 3554306 (1971-01-01), Wilburn
patent: 4387775 (1983-06-01), Adolfsson et al.

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