Method of excavating a pile hole and an apparatus therefor

Details Method of excavating a pile hole and an apparatus therefor Method of excavating a pile hole and an apparatus therefor

1981-03-30

1984-03-13

Novosad, Stephen J.

Boring or penetrating the earth

Processes

Boring with specific fluid

175269, 175285, 175213, E21B 1032

Patent

active

044361670

ABSTRACT:
A method and an apparatus for excavating pile holes of various shapes, including a pile hole with a widened bottom and a pile hole with a widened top and widened bottom, by means of an excavating bit and widening bits.

REFERENCES:
patent: 2457628 (1948-12-01), Baker
patent: 2699921 (1955-01-01), Garrison
patent: 3126065 (1964-03-01), Chadderdon
patent: 3195661 (1965-07-01), Jackson et al.
patent: 4134619 (1982-08-01), Bunnelle
patent: 4278137 (1981-07-01), Van Eak

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