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Inventor: Takasugi; Tamotsu
Address: Ibara, JP
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 5014424 |
Method of making a curved pipe |
May 14, 1991 |
| A bent pipe is made of a metal strip having one edge in a straight line and the other edge in a curved line by winding it helically. A double fold and a single fold are formed along the straight edge and the curved edge, respectively. Then the metal strip is wound helically so that the n |
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