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2 117 542

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IPC

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Application

97112765/02, 1997-07-29

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Actual filing date

1997-07-29

(45)

Published

1998-08-20

(72)

Inventor

Zelenov G.A.Shimchuk F.S.Molochnikov N.D.Fadeev E.V.

(73)

Holder

Saratovskoe Aktsionernoe Proizvodstvenno-Kommercheskoe Obshchestvo Sapkon

METHOD FOR SHAPING BRANCH PIPE WITH INCREASED WALL THICKNESS Russian patent published in 1998 - IPC

Abstract RU 2117542 C1

FIELD: plastic metal working. SUBSTANCE: method comprises steps of spinning branch pipes and simultaneously cutting off their ends; placing ring with radially arranged openings to die in order to increase thickness of wall of branch pipe. Material of shaped blank penetrates to said radially arranged opening and serves as rivets. EFFECT: enhanced reliability of nondetachable joining. 3 dwg

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RU 2 117 542 C1

Authors

Zelenov G.A.

Shimchuk F.S.

Molochnikov N.D.

Fadeev E.V.

Dates

1998-08-20—Published

1997-07-29—Filed

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