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2 310 094

(13)

(51)

IPC

F04B47/02(2006-01-01)

(21) (22)

Application

2006116821/06, 2006-05-16

(24)

Start date

2006-05-16

(22)

Actual filing date

2006-05-16

(45)

Published

2007-11-10

(72)

Inventor

Shrajbman Vladimir MoiseevichGrunin Sergej ViktorovichDudyrev Stanislav VladimirovichBlinov Vladimir Borisovich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Spetsial'Nogo Mashinostroenija I Metallurgii Zavody"

LONG-STROKE CHAIN DRIVE OF OIL-WELL PUMP Russian patent published in 2007 - IPC F04B47/02

Abstract RU 2310094 C1

FIELD: oil producing industry.

SUBSTANCE: invention is designed for producing oil by oil-well pumps with drives arranged on surface of ground. Proposed long-stroke chain drive of oil-well pump contains frame-mounted electric motor, reduction gear, mechanism converting rotation into reciprocation with endless chain passed over drive and driven sprockets. Chain engages through carriage with counterweight arranged on flexible member with unit of connection with sucker rod string. Chain lubrication unit contains reservoir for lubricating liquid. Chain lubricating unit is made in form of plunger pump connected with reservoir with lubricating liquid and installed over drive sprocket for engagement of plunger with chain links.

EFFECT: simplified design and reduced overall dimensions of drive owing to provision of delivery of lubricant to drive sprocket and chain without dipping of chain into reservoir with lubricating liquid.

2 dwg

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RU 2 310 094 C1

Authors

Shrajbman Vladimir Moiseevich

Grunin Sergej Viktorovich

Dudyrev Stanislav Vladimirovich

Blinov Vladimir Borisovich

Dates

2007-11-10—Published

2006-05-16—Filed