Mining drill

Details Mining drill Mining drill

1982-02-08

1983-08-16

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Plural separable cutter elements

175410, 175393, E21B 1002

Patent

active

043986110

ABSTRACT:
In a mine tool of the type having a drive body holding a bit, the drive body includes a pair of forwardly projecting flanges forming air passages in proximity to the cutting edges for the conveyance of detritus.

REFERENCES:
patent: 3187825 (1965-06-01), Bower, Jr.
patent: 3415332 (1968-12-01), Bower, Jr.
patent: 4190128 (1980-02-01), Emmerich

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