Drill bit

Details Drill bit Drill bit

1975-07-28

1976-07-27

Wood, Jr., M. H.

Cutlery

F16C 3366

Patent

active

039716007

ABSTRACT:
A drill bit having a body with a shaft thereon, a roller cutter, an annular thrust bearing, means for connecting said roller cutter to the thrust bearing, means for retaining said thrust bearing on the shaft, and a lubrication system containing the thrust bearing and the retaining means with the lubrication system seal positioned between the outer edge of the roller cutter and the base of the shaft.

REFERENCES:
patent: 2076001 (1937-04-01), Reed
patent: 2104819 (1938-01-01), Schlumpf et al.
patent: 3467448 (1969-09-01), Galle
patent: 3746405 (1973-07-01), Welton

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