DOWNHOLE ROD PUMP Russian patent published in 2013 - IPC F04B47/00

Abstract RU 2472968 C1

FIELD: engines and pumps.

SUBSTANCE: proposed pump comprises cylinder 1 with suction valve 2 and seal 9, hollow plunger 3 with pressure valve 5. Said composite hollow plunger 3 consists of several sections jointed with pressure valves 5. Axial channel of every section is continuously communicated via opening with cylinder axial bore.

EFFECT: ball smooth seating on seats of second and next section.

2 dwg

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RU 2 472 968 C1

Authors

Kuchurin Aleksej Evgen'Evich

Beketov Sergej Borisovich

Mashkov Viktor Alekseevich

Dates

2013-01-20—Published

2011-09-02—Filed