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2 247 261

(13)

(51)

IPC

(21) (22)

Application

2003104727/06, 2003-02-17

(24)

Start date

2003-02-17

(22)

Actual filing date

2003-02-17

(45)

Published

2005-02-27

(72)

Inventor

Gabdrakhimov N.M.Gabdrakhimova L.M.Gabdrakhimov M.S.

(73)

Holder

Gabdrakhimov Nail' MavlitzjanovichGabdrakhimova Lilija MavlitzjanovnaGabdrakhimov Mavlitzjan Sagit'Janovich

LOCK SUPPORT Russian patent published in 2005 - IPC

Abstract RU 2247261 C2

FIELD: oil producing industry.

SUBSTANCE: invention relates to lock supports of insert sucker-rod pumps. Lock support housing accommodating spring-loaded valve with retainer. Spring of valve is installed on stop. Support has two cylinders of different diameters, upper cylinder being connect by sub to insert pump. Spring-loaded valve is provided with guides. Hole from side of retainer in form of sheared dowel is made in one of guides, and ports are made in other guide and in lower cylinder of smaller diameter.

EFFECT: simplified design, improved reliability.

1 dwg

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RU 2 247 261 C2

Authors

Gabdrakhimov N.M.

Gabdrakhimova L.M.

Gabdrakhimov M.S.

Dates

2005-02-27—Published

2003-02-17—Filed