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2 150 631

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C1

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IPC

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Application

99123292/06, 1999-11-10

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Start date

1999-11-10

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Actual filing date

1999-11-10

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Published

2000-06-10

(72)

Inventor

Poliksha A.M.D'Jakov S.P.Kokolev N.V.Gorbatskij I.I.Vokhmjanin D.N.Mulenkov B.P.Karelin V.A.Surovtsev G.N.Vinokurov P.A.

(73)

Holder

Zakrytoe Aktsionernoe Obshchestvo

PIPE Russian patent published in 2000 - IPC

Abstract RU 2150631 C1

FIELD: manufacture of pipes. SUBSTANCE: lining layer of rubber is formed by winding uncured rubber tape; this layer has projections engageable with recesses available in load-bearing layer of pipe; rings fitted inside projections are made from glass-reinforced plastic; they are made by winding the glass cloth tape impregnated with binder and partially hardened beforehand. Wound in succession over lining layer are: layer of low-density material (nonwoven cloth or glass gauze), double spiral layer of glass roving and circular layer of glass roving; besides that, pipe is provided with wedge projections above circular layer of glass roving in area of connecting members; these projections are formed by circular winding of glass roving; structural layers of glass roving which form load-bearing layer of pipe and connecting members are wound entire length of pipe. Lining layer is provided with additional projections under wedge projections; additional projections are engageable with recess in wedge projection and are provided with additional rings made from glass-reinforced plastic; they are formed by winding the glass cloth tape which is impregnated with binder and partially hardened. EFFECT: improved quality; enhanced reliability. 1 dwg

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RU 2 150 631 C1

Authors

Poliksha A.M.

D'Jakov S.P.

Kokolev N.V.

Gorbatskij I.I.

Vokhmjanin D.N.

Mulenkov B.P.

Karelin V.A.

Surovtsev G.N.

Vinokurov P.A.

Dates

2000-06-10—Published

1999-11-10—Filed

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