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(19)

RU

(11)

2 012 769

(13)

C1

(51)

IPC

(21) (22)

Application

4604462/03, 1988-11-10

(22)

Actual filing date

1988-11-10

(45)

Published

1994-05-15

(72)

Inventor

Janturin A.Sh.Urazakov K.R.Zaljaliev M.A.Khamzina A.G.

(73)

Holder

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

SUCKER ROD PROTECTOR Russian patent published in 1994 - IPC

Abstract RU 2012769 C1

FIELD: downhole equipment. SUBSTANCE: protector has centering balls and two cylindrical body halves contacting tubing surface. Located in conjugated end hollow of body halves are rolling contact bearings of centering balls made in form of balls of smaller diameter eccentrically displaced relative to bearings. EFFECT: higher efficiency. 2 dwg

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RU 2 012 769 C1

Authors

Janturin A.Sh.

Urazakov K.R.

Zaljaliev M.A.

Khamzina A.G.

Dates

1994-05-15—Published

1988-11-10—Filed

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