SEALING UNIT FOR SUPPORT OF ROLLING-CUTTER BIT Russian patent published in 1998 - IPC

Abstract RU 2114276 C1

FIELD: bore-hole drilling equipment. SUBSTANCE: this relates to design of rolling-cutter bits intended for drilling deep bore-holes for gas and oil. Sealing unit for support of rolling-cutter bit accommodates journal, rolling cutter, disk-type seal stationary fastened on journal, circular seal, and flexible member. Disk-type seal is made rubberized, circular seal is metal-made and self-positioning. Aforesaid circular metal seal is kept in contact with disk-type rubberized seal through flexible member. This makes drilling bit support sealed reliably. EFFECT: higher efficiency. 1 dwg

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RU 2 114 276 C1

Authors

Borodin I.N.

Simisinov I.L.

Sekhniashvilli V.A.

Soldatov E.P.

Fedotov V.P.

Dates

1998-06-27—Published

1996-12-10—Filed