Removable drill bit nozzle

Details Removable drill bit nozzle Removable drill bit nozzle

1976-01-30

1977-04-26

Purser, Ernest R.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175422, 403326, E21B 908

Patent

active

040195937

ABSTRACT:
A nozzle is releasably locked in a drilling fluid passage of a rotary rock bit by a retainer member which bridges between matching grooves in the periphery of the nozzle and in the wall of the passage respectively. The retainer member is introduced to the matching grooves through a first passageway that extends from the surface of the bit to the matching grooves. The grooves lie in a common plane. A second passageway extends at an angle to the common plane from the surface of the bit to the matching grooves. A drive-out tool is inserted through the second passageway to remove the retainer member.

REFERENCES:
patent: 2597482 (1952-05-01), Harrison et al.
patent: 3084751 (1963-04-01), Scarborough
patent: 3115200 (1963-12-01), Mandrell
patent: 3220754 (1965-11-01), Mori
patent: 3329222 (1967-07-01), Neilson

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