Earth boring bit having a replaceable, threaded nozzle with wren

Details Earth boring bit having a replaceable, threaded nozzle with wren Earth boring bit having a replaceable, threaded nozzle with wren

1987-05-04

1987-11-03

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

With fluid conduit lining or element

175424, E21B 1060

Patent

active

047038144

ABSTRACT:
An improved earth boring bit of the type having diamond cutting elements and a fluid passageway to direct drilling fluid toward a borehole bottom during drilling, a metal nozzle with a cylindrical, threaded exterior and a noncircular throat having a minimum cross sectional dimension to receive a mating wrench and a length to resist damage from the torque required to make-up and break-out the nozzle for threads in the body of the bit.

REFERENCES:
patent: 2125445 (1938-08-01), Holveck
patent: 3785560 (1985-11-01), Hruby, Jr.
patent: 4022286 (1977-05-01), Gill
patent: 4098363 (1978-07-01), Rohde et al.
patent: 4176723 (1979-12-01), Arceneaux
patent: 4323130 (1982-04-01), Dennis
patent: 4372399 (1983-02-01), Cork
patent: 4396077 (1983-08-01), Radtke
patent: 4429755 (1984-02-01), Williamson
patent: 4494618 (1985-01-01), Radtke
patent: 4527642 (1985-07-01), Knowlton et al.
patent: 4603750 (1986-05-01), Sorenson

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