OIL-WELL PUMP WITH RAM SEAL Russian patent published in 1995 - IPC

Abstract RU 2044162 C1

FIELD: oil-well pumps. SUBSTANCE: rams are received by grooves provided on outer surface of plunger and curvature of their outer surface coincides with that of cylinder and spring which support rams. Cover plates are flush fitted on outer surfaces of rams and are held by cylinder. Radial and axial webs serve as mounting seats on rams. Surfaces of these webs coincide with end and inner surfaces of cover plates. End of ram and free end of cover plate lie in one radial plane. EFFECT: enhanced reliability. 2 dwg

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RU 2 044 162 C1

Authors

Kornev Boris Petrovich

Nikiforov Sergej Nikolaevich

Shopov Ivan Ivanovich

Dates

1995-09-20—Published

1992-11-24—Filed