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2 068 944

(13)

C1

(51)

IPC

(21) (22)

Application

4861288/03, 1990-08-20

(22)

Actual filing date

1990-08-20

(45)

Published

1996-11-10

(72)

Inventor

Nevolin V.G.Mal'Tsev A.V.

(73)

Holder

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

PRESSURE COMPENSATOR FOR BLASTING OPERATIONS IN BLAST- HOLE Russian patent published in 1996 - IPC

Abstract RU 2068944 C1

FIELD: blasting operations. SUBSTANCE: in compensator casing 1, having at least one cavity 2, whose inlet 3 is sealed by a safety element in the form of breakable diaphragm 4 and elastic plug 5, cavity 2 is separated at least by one partition 6, in which at least one hole 7 is made that is sealed by a safety element in the form of breakable diaphragm 4 and elastic plug 5. EFFECT: improved design. 1 dwg

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RU 2 068 944 C1

Authors

Nevolin V.G.

Mal'Tsev A.V.

Dates

1996-11-10—Published

1990-08-20—Filed

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