Rock boring apparatus

Details Rock boring apparatus Rock boring apparatus

1980-12-29

1983-07-19

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175374, 175376, E21B 1016

Patent

active

043939490

ABSTRACT:
Apparatus for boring holes in rock comprising a boring head rotatable about an axis of advance and a multiplicity of cutters mounted on the head, a plurality of which each comprises a cutter body rotatable about a cutter axis and cutting tooth means forming a helical path about the cutter axis.

REFERENCES:
patent: 667513 (1901-02-01), Forsyth et al.
patent: 2228286 (1941-01-01), Ross
patent: 2399372 (1946-04-01), Metzger et al.
patent: 2687875 (1954-08-01), Morlan et al.
patent: 3430718 (1969-03-01), Lawrence
patent: 3659660 (1972-05-01), Conn
patent: 4071098 (1978-01-01), Dively et al.
Kennemetal Inc. advertisement in Mining Equipment International, Oct., 1978, vol. 3, No. 8, p. 5.

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