Drill bit

Details Drill bit Drill bit

1975-08-13

1976-11-09

Wood, Jr., M. H.

Cutlery

308241, 308DIG8, F16C 1900

Patent

active

039907511

ABSTRACT:
A roller cutter drill bit with a body having a journal, a roller cutter, bearing means for rotatively mounting the roller cutter on the journal and a part of said bearing means including a maraging steel sleeve with a lubricant between the sleeve and the journal and between the sleeve and the roller cutter to prevent galling.

REFERENCES:
patent: 3150901 (1964-09-01), Esten et al.
patent: 3721307 (1973-03-01), Mayo
patent: 3845994 (1974-11-01), Trey
patent: 3913988 (1975-10-01), Scales et al.
patent: 3923348 (1975-12-01), Peck

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