Hydraulic mining nozzle-air lift device

Details Hydraulic mining nozzle-air lift device Hydraulic mining nozzle-air lift device

1975-02-26

1976-02-17

Brown, David H.

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

175 67, E21B 718

Patent

active

039386007

ABSTRACT:
A hydraulic nozzle device for removing soil from the interior and below a hollow structure.

REFERENCES:
patent: 538073 (1895-04-01), Harris
patent: 1853379 (1932-04-01), Rotinoff
patent: 2239610 (1941-04-01), Kuna
patent: 2660250 (1953-11-01), Gage et al.
patent: 2931187 (1960-04-01), Perkins
patent: 3153290 (1964-10-01), Saito
patent: 3260054 (1966-07-01), Lorenz
patent: 3262508 (1966-07-01), Price
patent: 3331456 (1967-07-01), Pittman
patent: 3597930 (1971-08-01), Rochelle

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