Threaded nozzle for a drill bit

Details Threaded nozzle for a drill bit Threaded nozzle for a drill bit

1985-07-25

1987-04-21

Leppink, James A.

Boring or penetrating the earth

Wedging slip assembly for supporting a pipe or rod

175393, 411 1, 411403, E21B 1018

Patent

active

046589180

ABSTRACT:
A threaded nozzle is adapted to be screwed into and screwed out of a threaded opening in a drill bit. The nozzle includes a front face having first and second contact surfaces which are adapted to be engaged by a manually actuable tool for screwing-in and screwing-out the nozzle. The first contact surface is inclined toward the direction of rotation in which the member is screwed-in, so that in response to the application of a force to the first contact surface for screwing-in the nozzle, a reaction force is applied against the tool for pushing the tool off the first contact surface when the nozzle has been screwed-in a predetermined extent.

REFERENCES:
patent: 2244124 (1941-06-01), Shemeley
patent: 3134292 (1964-05-01), Walton
patent: 3178988 (1965-04-01), Borup
patent: 3854372 (1974-12-01), Gutshall
patent: 4372399 (1983-02-01), Cork
patent: 4381825 (1983-05-01), Radtke
patent: 4400024 (1983-08-01), Ratcliff et al.
patent: 4437707 (1984-03-01), Best et al.
patent: 4492500 (1985-01-01), Ewing

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