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2 099 624

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Application

95106857/06, 1995-04-28

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Actual filing date

1995-04-28

(45)

Published

1997-12-20

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Inventor

Grigorashchenko V.A.Kurlenja M.V.Tupitsyn S.K.Plavskikh V.D.Khar'Kin V.A.Zharkov E.G.Savel'Ev A.S.

(73)

Holder

Institut Gornogo Dela So RanGosudarstvenno-Aktsionernaja Nauchno-Proizvodstvennaja Kompanija

METHOD OF TRENCHLESS REPLACEMENT OF PIPE LINE Russian patent published in 1997 - IPC

Abstract RU 2099624 C1

FIELD: repair and replacement of underground pipe lines. SUBSTANCE: old pipe line is removed from mounting pit by breaking it and forming well whose diameter exceeds outer diameter of old pipe line. Old pipe line is removed from two opposite mounting pits to repair coupling. Removal of remaining part of old pipe line and driving the coupling into free pit shall be timed to drawing new pipe line. EFFECT: enhanced reliability. 3 dwg

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RU 2 099 624 C1

Authors

Grigorashchenko V.A.

Kurlenja M.V.

Tupitsyn S.K.

Plavskikh V.D.

Khar'Kin V.A.

Zharkov E.G.

Savel'Ev A.S.

Dates

1997-12-20—Published

1995-04-28—Filed

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