Clad mud nozzle

Details Clad mud nozzle Clad mud nozzle

1980-03-10

1981-11-24

Leppink, James A.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

E21C 1301

Patent

active

043018777

ABSTRACT:
An earth boring drill bit has a drilling fluid nozzle with features that protect the nozzle retaining ring from erosion and avoid pressing cracks. The drill bit has a passage with at least one outlet and a nozzle located at the outlet for discharging fluid. The nozzle has a shell mounted in the outlet and retained by a retaining ring. An insert is bonded inside the shell. The insert is of tungsten carbide or ceramic for resisting erosion. The insert has an extended portion that extends below the rim of the outer member for protecting the retaining ring from flowing drilling fluid.

REFERENCES:
patent: 2520362 (1950-08-01), Goolsbee
patent: 3096834 (1963-07-01), Steen
patent: 3111179 (1963-11-01), Albers et al.
patent: 3129777 (1964-04-01), Haspert
patent: 3131779 (1964-05-01), Rowley et al.
patent: 3179189 (1965-04-01), Goodwin
patent: 3207241 (1965-09-01), Nellson

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