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2 085 698

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C1

(51)

IPC

(21) (22)

Application

93020750/03, 1993-04-21

(22)

Actual filing date

1993-04-21

(45)

Published

1997-07-27

(72)

Inventor

Konanykhin A.I.Vasil'Kov V.K.Goldobin V.V.Konanykhin V.A.Makarenko M.B.Davydov V.E.

(73)

Holder

Vostochnyj Nauchno-Issledovatel'Skij Gornorudnyj Institut

CENTRALIZER FOR DRILL RODS Russian patent published in 1997 - IPC

Abstract RU 2085698 C1

FIELD: mining industry. SUBSTANCE: this relates to devices used for ensuring exact direction of drilling well by centering of drilling tool. Drill rod centralizer has body which is made up of two half-sleeves seated on axle and embracing drill rod in groove having radial hole. Body is provided with radially located guide members made in the form of strips which are rigidly and symmetrically fastened on body. Attached to strips by means of screws and washers are elastic plates which are by 5-10 mm longer than aforesaid strips. Holes for screws in elastic plates are elliptic in form. EFFECT: high efficiency. 3 dwg

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RU 2 085 698 C1

Authors

Konanykhin A.I.

Vasil'Kov V.K.

Goldobin V.V.

Konanykhin V.A.

Makarenko M.B.

Davydov V.E.

Dates

1997-07-27—Published

1993-04-21—Filed

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