Composite nozzle for earth boring and bore enlarging bits

Details Composite nozzle for earth boring and bore enlarging bits Composite nozzle for earth boring and bore enlarging bits

1981-08-12

1983-07-12

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175393, 175422, E21B 1018

Patent

active

043925340

ABSTRACT:
A composite nozzle for a drill bit and a bore enlarging bit, the body of the nozzle, which is adapted to discharge water toward rotary cutters, being fabricated from a ceramic. The nozzle has a bottom surface which is provided with a high-impact metal plate, and a circumferential wall portion also provided with a reinforcing plate.

REFERENCES:
patent: 2950090 (1960-08-01), Swart
patent: 3084751 (1963-04-01), Scarborough
patent: 3129777 (1964-04-01), Haspert
patent: 3189107 (1965-06-01), Galle
patent: 3419220 (1968-12-01), Goodwin et al.
patent: 4019593 (1976-04-01), Craig

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