发明授权
US4827747A Method for producing a bellows with oval cross section and apparatus for
carrying out the method
失效
用于制造具有椭圆形截面的波纹管的方法和用于执行该方法的装置
- 专利标题： Method for producing a bellows with oval cross section and apparatus for carrying out the method
- 专利标题（中）： 用于制造具有椭圆形截面的波纹管的方法和用于执行该方法的装置
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申请号： US051697申请日： 1987-05-20
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公开(公告)号： US4827747A公开(公告)日： 1989-05-09
- 发明人: Kenichi Okada , Hiroshi Asao , Keiichi Nakamura
- 申请人： Kenichi Okada , Hiroshi Asao , Keiichi Nakamura
- 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： JPX61-114568 19860521; JPX62-91015 19870415
- 主分类号： B21D15/10
- IPC分类号： B21D15/10 ; B21D26/02 ; B21D26/043 ; B21D26/047
摘要：
After a metallic cylindrical tube is bulged to form a bellows with a circular cross section, this bellows is ovalized to form a bellows with an oval cross section. For this reason, an inexpensive round tube (cylindrical tube) can be used as the material for a bellows with an oval cross section and it is unnecessary to use an expensive oval tube. Accordingly, a bellows with an oval cross section can be produced at low cost.
公开/授权文献
- US6051293A Probe sheath 公开/授权日：2000-04-18
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