METALLIC TUBULAR BODY AND ITS MANUFACTURING METHOD

Japanese Patent JP3943390

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PROBLEM TO BE SOLVED: To provide a manufacturing method of small-diameter metallic tubular body having at least two or more kinds of inside diameters.
SOLUTION: In this manufacturing method of the metallic tubular body having at least two or more kinds of the inside diameters, the tubular body is manufactured by cutting the joined parts between the metallic sheet 4 and plate-like bodies 5 after punching the plate-like bodies 5 having the developed shape of the tubular body from a metallic sheet 4 in the state where the metallic sheet 4 and the plate-like bodies 5 are partially joined and pressing the plate-like bodies into a tubular shape having at least two or more kinds of the inside diameters.

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Ooyanai, Tetsuya
Okano, Masayuki

JP2001000396766

April 13, 2007

December 27, 2001

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TERUMO CORP
OKANO KOGYO KK

B21D5/01; B21C37/06; B21C37/08; B21C37/083; B21D51/16; B21D51/18; B21G1/08; B21D5/01; B21C37/06; B21C37/08; B21C37/083; B21D51/16; B21G1/00; (IPC1-7): B21D5/01; B21D51/16; B21D51/18

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