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2 014 420

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IPC

(21) (22)

Application

4838442/03, 1990-06-12

(22)

Actual filing date

1990-06-12

(45)

Published

1994-06-15

(72)

Inventor

Eremin D.M.Kagarmanov N.F.Khafizova A.I.

(73)

Holder

Bashkirskij Gosudarstvennyj Nauchno-Issledovatel'Skij I Proektnyj Institut Neftjanoj Promyshlennosti

DRILL PIPE JOINT Russian patent published in 1994 - IPC

Abstract RU 2014420 C1

FIELD: drilling practice. SUBSTANCE:: drill pipes above face motor are interconnected by a joint comprised of a casing with outer and inner spherical end surfaces, a connector bush with a spherical surface mating with outer spherical surface of casing, and two-arm lever with journals accommodated in casing. One arm of lever is detachably linked with connector bush while the other one has supporting side surface. Outer spherical surfaces of casing and two-arm lever are provided with sealing members. EFFECT: improved design. 5 dwg

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RU 2 014 420 C1

Authors

Eremin D.M.

Kagarmanov N.F.

Khafizova A.I.

Dates

1994-06-15—Published

1990-06-12—Filed

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