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2 074 304

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IPC

(21) (22)

Application

92001968/03, 1992-10-23

(22)

Actual filing date

1992-10-23

(45)

Published

1997-02-27

(72)

Inventor

Zejnalov Rakhib Rashid[Az]Gadzhiev Ilkham Shamil[Az]Budagov Oktaj Ismail[Az]Piterskij Vladimir Mikhajlovich[Ru]Panin Nikolaj Mitrofanovich[Ru]

(73)

Holder

Zejnalov Rakhib Rashid[Az]Gadzhiev Ilkham Shamil[Az]Budagov Oktaj Ismail[Az]Piterskij Vladimir Mikhajlovich[Ru]Panin Nikolaj Mitrofanovich[Ru]

THREADED LOCKING COUPLING OF PIPING Russian patent published in 1997 - IPC

Abstract RU 2074304 C1

FIELD: well drilling. SUBSTANCE: coupling and nipple have conical threaded and thread free portions. The length of the portions are chosen according to the relation ltf:lt= 0,15-0,35, where ltf and lt are the length of thread free and threaded portioning correspondingly. EFFECT: high reliability. 1 dwg

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RU 2 074 304 C1

Authors

Zejnalov Rakhib Rashid[Az]

Gadzhiev Ilkham Shamil[Az]

Budagov Oktaj Ismail[Az]

Piterskij Vladimir Mikhajlovich[Ru]

Panin Nikolaj Mitrofanovich[Ru]

Dates

1997-02-27—Published

1992-10-23—Filed

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