Mining drill

Details Mining drill Mining drill

1982-02-08

1984-12-18

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Plural separable cutter elements

175418, E21B 1062

Patent

active

044886098

ABSTRACT:
In a mine tool of the type having a drive body holding a bit, the bit includes forwardly projecting support lands holding a cutting insert wherein the lands have a maximum dimension as measured in a direction perpendicular to a respective side surface of the cutting insert of less than about fifteen percent of the lengthwise dimension of the insert.

REFERENCES:
patent: 3032129 (1962-05-01), Fletcher et al.
patent: 3187825 (1965-06-01), Bower, Jr.
patent: 4099585 (1978-07-01), Emmerich
patent: 4330044 (1982-05-01), Orr et al.

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