Invention Grant
- Patent Title: Pipe expanding method and pipe expanding device for steel pipe
- Patent Title (中): 钢管膨胀法及扩管装置
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Application No.: US12282903Application Date: 2007-05-14
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Publication No.: US08365571B2Publication Date: 2013-02-05
- Inventor: Takahiro Noguchi , Tatsushi Ito , Fumiaki Kawahara
- Applicant: Takahiro Noguchi , Tatsushi Ito , Fumiaki Kawahara
- Applicant Address: JP Tokyo
- Assignee: Komatsu Ltd.
- Current Assignee: Komatsu Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Global IP Counselors
- Priority: JP2006-134815 20060515
- International Application: PCT/JP2007/059834 WO 20070514
- International Announcement: WO2007/132799 WO 20071122
- Main IPC: B21D39/08
- IPC: B21D39/08 ; B21C37/16
Abstract:
A pipe expanding device inserts a pipe expanding punch into an opening end portion of a steel pipe with a special shape in the state where the opening end portion of the steel pipe with a special shape is pressed in an insertion direction of the punch.
Public/Granted literature
- US20090090159A1 PIPE EXPANDING METHOD AND PIPE EXPANDING DEVICE FOR STEEL PIPE Public/Granted day:2009-04-09
Information query
