CONE DRILL BIT Russian patent published in 1997 - IPC

Abstract RU 2082868 C1

FIELD: equipment for well drilling, particular, core drill bits. SUBSTANCE: cone drill bit has roller bearings made in form of compact small-size roller bearings of individual manufacture. End bearing is made in form of ball. Ball is located in spherical sockets of cone and pin. Lock is made in form of ball. Nipple is installed in pin channel. Cavities between cone and pin and annular sealing member are filled with lubricant. EFFECT: higher efficiency. 1 dwg

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RU 2 082 868 C1

Authors

Voskresenskaja Marina Fedorovna

Voskresenskij Fedor Fedorovich

Dates

1997-06-27—Published

1992-01-29—Filed