Title:
METHOD FOR MANUFACTURING BRANCHED PIPE AND APPARATUS FOR MANUFACTURING BRANCHED PIPE
Document Type and Number:
WIPO Patent Application WO/2012/015007
Kind Code:
A1
Abstract:
Provided is a method for manufacturing a branched pipe, comprising a first bulging step for applying a pressure to an inside surface of an untreated pipe (200) using an elastic body (81), whereby an opening along a circumferential direction (C) is formed at a distal end part of a bulging section (300) while the bulging section (300) is caused to bulge out from the trunk (250) of the untreated pipe (200); and a second bulging step for applying a pressure to the inside surface of the element pipe (200) using the elastic body (81), whereby the bulging section (300) is caused to bulge out from the trunk (250).
Inventors:
OGURA, Taiki (3-1-1 Ueno, Hirakata-sh, Osaka 11, 〒5731011, JP)
小倉 大樹 (〒11 大阪府枚方市上野３－１－１ 株式会社小松製作所 大阪工場内 Osaka, 〒5731011, JP)
小倉 大樹 (〒11 大阪府枚方市上野３－１－１ 株式会社小松製作所 大阪工場内 Osaka, 〒5731011, JP)
Application Number:
JP2011/067357
Publication Date:
February 02, 2012
Filing Date:
July 28, 2011
Export Citation:
Assignee:
KOMATSU LTD. (2-3-6, Akasaka Minato-k, Tokyo 14, 〒1078414, JP)
株式会社小松製作所 (〒14 東京都港区赤坂２－３－６ Tokyo, 〒1078414, JP)
OGURA, Taiki (3-1-1 Ueno, Hirakata-sh, Osaka 11, 〒5731011, JP)
株式会社小松製作所 (〒14 東京都港区赤坂２－３－６ Tokyo, 〒1078414, JP)
OGURA, Taiki (3-1-1 Ueno, Hirakata-sh, Osaka 11, 〒5731011, JP)
International Classes:
B21D22/10; B21C37/29; B21D19/08; B21D26/035; B21D26/037
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (South Forest Bldg, 1-4-19 Minamimori-machi, Kita-ku, Osaka-sh, Osaka 54, 〒5300054, JP)
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Claims:
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