DIAMOND CROWN BIT Russian patent published in 1994 - IPC

Abstract RU 2023858 C1

FIELD: drilling of wells. SUBSTANCE: crown bit comprises body with multilayer diamond-containing matrix rigidly secured thereto and having working end face of rack-shaped cross section. Matrix is divided into segments by radial flushing slots. Inclusions of material under spaces of matrix working end face throughout matrix height are stronger than the diamond-containing layer. EFFECT: improved design. 2 dwg

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RU 2 023 858 C1

Authors

Chikhotkin Viktor Fedorovich[Kz]

Chikhotkin Fedor Ivanovich[Kz]

Dates

1994-11-30—Published

1990-03-11—Filed