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2 012 738

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C1

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IPC

(21) (22)

Application

5033020/03, 1991-07-08

(22)

Actual filing date

1991-07-08

(45)

Published

1994-05-15

(72)

Inventor

Kostylev A.D.Terskov A.D.Tkach Kh.B.Smoljanitskij B.N.Chervov V.V.Trubitsyn V.V.

(73)

Holder

Institut Gornogo Dela So Ran

DEVICE FOR MAKING HOLES IN GROUND Russian patent published in 1994 - IPC

Abstract RU 2012738 C1

FIELD: devices for making holes in ground. SUBSTANCE: device has cylindrical body, striker, air distribution mechanism and appliance for control of direction of device motion. The latter has cylindrical shell and bow-shaped flexible pneumatic chamber. Body is made with cylindrical supporting member. Air distribution mechanism is made in form of stepped hollow branch pipe. Pneumatic chamber is communicated with compressed air main line and located between supporting member and shell. EFFECT: higher efficiency. 6 cl, 6 dwg

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RU 2 012 738 C1

Authors

Kostylev A.D.

Terskov A.D.

Tkach Kh.B.

Smoljanitskij B.N.

Chervov V.V.

Trubitsyn V.V.

Dates

1994-05-15—Published

1991-07-08—Filed

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