DEVICE FOR CLEANING PIPING INTERNAL SURFACE Russian patent published in 1997 - IPC

Abstract RU 2074312 C1

FIELD: oil and gas production. SUBSTANCE: scrapers of the device are placed along shaft generatrix and passed through guides towards the periphery. The scrapers has an opportunity to be fed in axial direction with regard to the body. The body is installed on the shaft so as to be axially moved and to take torque. A spring is installed between the body and adjacent nut. EFFECT: more stable operation of the scrapers. 2 dwg

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RU 2 074 312 C1

Authors

Zaljatov M.Sh.

Ibragimov N.G.

Rajanov M.M.

Demchuk A.P.

Dates

1997-02-27—Published

1993-03-29—Filed