DRILLING BIT Russian patent published in 2017 - IPC E21B10/46

Abstract RU 2634596 C1

FIELD: mining.

SUBSTANCE: drilling bit contains a hollow body with a cylindrical section, a washing channel and a reinforced rock-breaking inserts with a working end. The cylindrical portion of the body has a closed groove having a sinusoidal or a cosine wave shape in the frontal plane and serving to place the rock-breaking inserts made in the form of balls having a diameter greater than the width of the groove.

EFFECT: improved efficiency of the drilling bit.

2 cl, 2 dwg

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RU 2 634 596 C1

Authors

Panin Nikolaj Mitrofanovich

Dates

2017-11-01—Published

2017-02-16—Filed