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2 079 523

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Application

94008774/04, 1994-03-14

(22)

Actual filing date

1994-03-14

(45)

Published

1997-05-20

(72)

Inventor

Sobolevskaja L.V.Nazarova D.V.Ippolitov E.V.Fedjakin N.P.Delova F.R.Kovalenko S.I.Petljakova L.S.Trofimov E.V.Gruntenko G.S.

(73)

Holder

Maloe Vnedrencheskoe Predprijatie

WORKING LIQUID FOR HYDRAULIC SYSTEMS OF GAS LINE Russian patent published in 1997 - IPC

Abstract RU 2079523 C1

FIELD: hydraulic systems of cut-off fittings which operates at (-70)-(+70) C. SUBSTANCE: composition comprises, mas.%: polymethyl siloxane liquid (its viscosity being 18-55 mm2/s), 40-60; fraction of heavy oil (its boiling away temperature is 180-315 C), 40-60. EFFECT: improved safety and operation for system of automatic control of hydralic drives of cut-off fittings. 4 tbl

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RU 2 079 523 C1

Authors

Sobolevskaja L.V.

Nazarova D.V.

Ippolitov E.V.

Fedjakin N.P.

Delova F.R.

Kovalenko S.I.

Petljakova L.S.

Trofimov E.V.

Gruntenko G.S.

Dates

1997-05-20—Published

1994-03-14—Filed

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