Nozzle retention method for rock bits

Details Nozzle retention method for rock bits Nozzle retention method for rock bits

1981-03-11

1983-10-04

Pate, III, William F.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

239DIG19, 175422, E21B 1018

Patent

active

044073780

ABSTRACT:
A method to retain a nozzle in a rock bit is disclosed for use particularly with air-type roller cone rock bits. A plastic nozzle body is formed with a multiplicity of radially disposed fins equidistantly spaced on the periphery of the nozzle body. A nozzle retention hole is formed in the body of the rock bit with a diameter slightly less than the diameter of the fins on the plastic nozzle. As the plastic nozzle body is forced into the nozzle retention hole, the fins deflect slightly in a downstream direction and "bite" against the nozzle retention walls formed by the bit body.

REFERENCES:
patent: 3111179 (1963-11-01), Albers et al.
patent: 3189107 (1965-06-01), Galle
patent: 3995897 (1976-12-01), Paskert
patent: 4083586 (1978-04-01), Helm
patent: 4193463 (1980-03-01), Evans
patent: 4194750 (1980-03-01), Sovish et al.
patent: 4241878 (1980-12-01), Underwood
patent: 4268041 (1981-05-01), Sovish et al.

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