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2 109 987

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IPC

(21) (22)

Application

96104920/06, 1996-03-18

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Actual filing date

1996-03-18

(45)

Published

1998-04-27

(72)

Inventor

Lesnichij Vitalij FedorovichBezzubov Aleksandr Vasil'EvichShalin Aleksej PetrovichKhostikoev Mikhail ZaurbekovichBatrakov Vladimir NikolaevichKozlovskij Aleksandr MikhajlovichBondarenko Vladimir AlekseevichEgorov Aleksandr MikhajlovichFedorin Viktor Romanovich

(73)

Holder

OIL-WELL SUCKER-ROD PUMP Russian patent published in 1998 - IPC

Abstract RU 2109987 C1

FIELD: oil industry; pumping out of oil from deep wells. SUBSTANCE: inner and outer threaded surfaces are made on pump members interconnected by threaded conjugations. Threaded surfaces are provided with conical hole and spherical projection with side recess. Value of radius of spherical projection is specified by relationship given in description of invention. EFFECT: enlarged operating capabilities. 3 dwg

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RU 2 109 987 C1

Authors

Lesnichij Vitalij Fedorovich

Bezzubov Aleksandr Vasil'Evich

Shalin Aleksej Petrovich

Khostikoev Mikhail Zaurbekovich

Batrakov Vladimir Nikolaevich

Kozlovskij Aleksandr Mikhajlovich

Bondarenko Vladimir Alekseevich

Egorov Aleksandr Mikhajlovich

Fedorin Viktor Romanovich

Dates

1998-04-27—Published

1996-03-18—Filed