Fluid passage formed by diamond insert studs for drag bits

Details Fluid passage formed by diamond insert studs for drag bits Fluid passage formed by diamond insert studs for drag bits

1979-05-04

1981-12-01

Leppink, James A.

Boring or penetrating the earth

Bit or bit element

Magnetized or with magnet

175393, 175410, E21B 1056, E21B 1060

Patent

active

043031366

ABSTRACT:
Diamond drag bits with a multiplicity of individual diamond insert studs standing-off from the face of the bit require fluid over and around each separate insert to cool and clean the stud. An axially aligned fluid passage formed within the insert stud communicates with a fluid-filled chamber formed by the drag bit. The fluid exits the passage in the stud in front of the diamond cutting face of the stud to assure cooling and cleaning of each insert stud inserted in the face of the drag bit.

REFERENCES:
patent: 1388490 (1921-08-01), Suman
patent: 1476481 (1923-12-01), Bashara
patent: 2003144 (1935-05-01), Graham, Jr.
patent: 2053801 (1936-09-01), Mitchell
patent: 3180440 (1965-04-01), Birdwell
patent: 3555937 (1971-01-01), Nicodemas
patent: 4006788 (1977-02-01), Garner
patent: 4109737 (1978-08-01), Bovenkerk
patent: 4116289 (1978-09-01), Feenstra

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