发明授权
- 专利标题： Method and apparatus for forming a non-circular pipe
- 专利标题（中）： 用于形成非圆管的方法和装置
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申请号： US862296申请日： 1997-05-22
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公开(公告)号： US5735156A公开(公告)日： 1998-04-07
- 发明人: Yuji Yoshitomi , Shinji Tanaka , Shota Iwakura , Takeshi Araya , Takamitsu Nakazaki , Norio Yokoba , Toshimi Sato
- 申请人： Yuji Yoshitomi , Shinji Tanaka , Shota Iwakura , Takeshi Araya , Takamitsu Nakazaki , Norio Yokoba , Toshimi Sato
- 申请人地址： JPX Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX6-224763 19940920
- 主分类号： F02C7/00
- IPC分类号： F02C7/00 ; B21C37/15 ; B21D9/15 ; B21D26/033 ; B21D26/039 ; B21D26/041 ; B21D26/045 ; B21D26/047 ; B21D53/84 ; B21D26/02
摘要：
A method of forming a non-circular pipe having a different sectional shape in the longitudinal direction thereof by bending a raw pipe while applying pressure to the inside of the raw pipe, wherein the circumference of a section of the raw pipe is substantially equalized to the circumference of a section, corresponding to the section of the raw pipe, of the non-circular pipe after formed.
公开/授权文献
- US5314367A Marble toy 公开/授权日：1994-05-24
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