Title:
金属屋根板を曲げる方法および曲げ装置
Document Type and Number:
Japanese Patent JP4304072
Kind Code:
B2
Abstract:
Metal sheets, and in particular, metal sheets for roofing of the kind having upstanding flat edges ending with beads, are bent by rolling the flat edges such that they become gradually thinner towards the beads. The sheets will also be bent if the beads are not rolled.
Inventors:
Larsh Ingvarson
Application Number:
JP2003543761A
Publication Date:
July 29, 2009
Filing Date:
September 18, 2002
Export Citation:
Assignee:
Woutik Actie Borrag
International Classes:
B21D5/08; B21D5/14; B21D11/08; B21D11/10; B21D53/00
Domestic Patent References:
| JP11047836A | ||||
| JP58000322A | ||||
| JP59133912A | ||||
| JP10249443A |
Foreign References:
| US5253501 |
Attorney, Agent or Firm:
Chika Takagi
Junji Yuda
Shoji Miwa
Junji Yuda
Shoji Miwa