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2 280 521

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IPC

B21D15/04(2006-01-01)

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Application

2005101472/02, 2005-01-24

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Start date

2005-01-24

(22)

Actual filing date

2005-01-24

(45)

Published

2006-07-27

(72)

Inventor

Shljakhin Aleksandr NikolaevichLytkin Igor' NikitichSavchinskij Ivan Grigor'EvichGrunin Nikolaj NikolaevichKrivenkov Valerij MikhajlovichLytkin Nikita IgorevichKhokhlov Vitalij MikhajlovichPanova Natalija Iosifovna

(73)

Holder

TUBES WITH HELICAL CORRUGATIONS PRODUCTION METHOD Russian patent published in 2006 - IPC B21D15/04

Abstract RU 2280521 C1

FIELD: plastic metal working, possibly manufacture of tubes with helical corrugations.

SUBSTANCE: method comprises steps of forming on initial tube being axially moved set of corrugations at least by means of two sets of rollers arranged around tube and turned relative to lengthwise axis of tube by different angles. Relative rotation of tube and roller sets around lengthwise axis of tube is provided for forming at least one additional set of corrugations crossing formed corrugations due to rotating rollers of one set in direction opposite relative to rotation angle of rollers of other set.

EFFECT: enlarged manufacturing possibilities, improved quality of tubes, enhanced efficiency of process.

8 cl, 3 dwg

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RU 2 280 521 C1

Authors

Shljakhin Aleksandr Nikolaevich

Lytkin Igor' Nikitich

Savchinskij Ivan Grigor'Evich

Grunin Nikolaj Nikolaevich

Krivenkov Valerij Mikhajlovich

Lytkin Nikita Igorevich

Khokhlov Vitalij Mikhajlovich

Panova Natalija Iosifovna

Dates

2006-07-27—Published

2005-01-24—Filed