DRILLING TOOL Russian patent published in 1994 - IPC

Abstract RU 2024726 C1

FIELD: drilling equipment. SUBSTANCE: drilling tool has shafts 4, bushings 3 and fastening units of body 1 whose axes are parallel to one another. Bushings 3 has cylindrical outer surface. Fitting surfaces on shafts 4 for members 5 and bushings 3 are of same diameter. EFFECT: reduced labour input in manufacture and easier handling in operation. 2 dwg

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RU 2 024 726 C1

Authors

Rajkhert L.A.

Ehdel'Man Ja.A.

Messer A.G.

Krivonenkov S.P.

Rajkhert S.L.

Dates

1994-12-15—Published

1991-06-27—Filed