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2 039 192

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C1

(51)

IPC

(21) (22)

Application

5027948/03, 1992-02-17

(22)

Actual filing date

1992-02-17

(45)

Published

1995-07-09

(72)

Inventor

Dvornikov L.T.Beresnev A.N.Kuklin S.A.

(73)

Holder

Sibirskij Metallurgicheskij Institut

SOLID-ALLOY INSERT FOR BORING DRILL BITS Russian patent published in 1995 - IPC

Abstract RU 2039192 C1

FIELD: drilling. SUBSTANCE: working surface of solid-alloy insert for boring drill bits is made in the form of figure of rotation of flat curve section of witch of Agnesi around of its axis of symmetry. Borders of section are node points of versiera. EFFECT: solid-alloy insert for boring drill bits is used in drilling. 4 dwg

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RU 2 039 192 C1

Authors

Dvornikov L.T.

Beresnev A.N.

Kuklin S.A.

Dates

1995-07-09—Published

1992-02-17—Filed

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