SWAB Russian patent published in 2001 - IPC

Abstract RU 2168611 C2

FIELD: oil producing industry; applicable in plants for lifting fluid from wells. SUBSTANCE: swab has check valve, body with circular beads, sealing members and flexible collar with protective bushing. Sealing members have side slots and installed on body for radial motion. Connectors with side protrusions are installed in side slots. Cavity between collar and body is communicated with space above swab. Connectors are additionally provided with end projections. EFFECT: higher operate reliability of device and extended field of its application. 2 dwg

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RU 2 168 611 C2

Authors

Basos G.Ju.

Dates

2001-06-10—Published

1999-06-21—Filed