Drill bit for reverse drilling

Details Drill bit for reverse drilling Drill bit for reverse drilling

1996-07-30

1998-04-28

Schoeppel, Roger J.

Boring or penetrating the earth

Bit or bit element

Cutting edges facing in opposite axial directions

175415, 175416, E12B 1000

Patent

active

057433453

ABSTRACT:
A drill bit for reverse drilling in a drill hole being produced by a percussive, fluid-actuated drill includes an elongated drill bit body having a bore extending there through for transmission of a fluid, the body terminating in a head end portion and a shank end portion. Abrasive resistant drilling buttons are arrayed on both the head end portion and the shank end portion to resist abrasion by the material being drilled, during either forward or reverse drilling.

REFERENCES:
patent: 3915246 (1975-10-01), Sheshtawy
patent: 4091884 (1978-05-01), Thomas
patent: 4986375 (1991-01-01), Maher
patent: 5074367 (1991-12-01), Estes
patent: 5090491 (1992-02-01), Tibbits et al.

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