Drill bit and drill assembly

Details Drill bit and drill assembly Drill bit and drill assembly

1987-07-30

1989-02-21

Neuder, William P.

Boring or penetrating the earth

With storage means for bit lubricant carried by bit or shaft

With fluid pressure-actuated feed means

175337, E21B 1018

Patent

active

048057096

ABSTRACT:
A drill bit for drilling into underground formations is disclosed, the drill bit having conduits for providing either lubricant or gaseous drilling fluid to the cutting cone bearings. In an alternate mode of operation, a mixture of lubricant and gaseous fluid is supplied to the bearings.

REFERENCES:
patent: 2814464 (1957-11-01), Pike et al.
patent: 2831660 (1958-04-01), Smiecinski
patent: 3029881 (1962-04-01), Swart
patent: 3125175 (1964-03-01), Medlock et al.
patent: 3924695 (1975-12-01), Kennedy
patent: 4080091 (1978-03-01), Hollingshead
patent: 4375242 (1983-03-01), Galle
patent: 4428442 (1984-01-01), Steinke
patent: 4508183 (1985-04-01), Drummond
patent: 4541494 (1985-09-01), Drummond

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