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2 021 481

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(21) (22)

Application

4938580/03, 1991-03-24

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Actual filing date

1991-03-24

(45)

Published

1994-10-15

(72)

Inventor

Ehdel'Man Ja.A.Makushin V.V.Messer A.G.Nikolaev V.F.Pavlov N.G.Ravilov F.F.Sianka-Ibarra L.Surkov D.V.Kuntsjak Ja.V.

(73)

Holder

Nauchno-Issledovatel'Skij Institut Burovoj Tekhniki

CORE CATCHER Russian patent published in 1994 - IPC

Abstract RU 2021481 C1

FIELD: coring. SUBSTANCE: core catcher consists of holder 1 with ports 2. Holder is enclosed by ring 3 with ports 4 accommodating levers 5 made in form of blade 6 to which turning shafts 7 adjoin. Diameter of base 8 of shafts exceeds thickness of blade 6. Segments 9 projecting above blade are not cutoff, and projection 10 is arranged in port 4 of ring 3 between segments 9 and comes in contact with blade upper surface. EFFECT: higher efficiency. 2 cl, 4 dwg

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RU 2 021 481 C1

Authors

Ehdel'Man Ja.A.

Makushin V.V.

Messer A.G.

Nikolaev V.F.

Pavlov N.G.

Ravilov F.F.

Sianka-Ibarra L.

Surkov D.V.

Kuntsjak Ja.V.

Dates

1994-10-15—Published

1991-03-24—Filed

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