Metal deforming – Process – Tube making or reshaping
Reexamination Certificate
2004-06-22
2009-12-29
Ross, Dana (Department: 3725)
Metal deforming
Process
Tube making or reshaping
C072S367100, C072S051000
Reexamination Certificate
active
07637135
ABSTRACT:
A method for producing hollow profiles provided with different cross sections along the length thereof includes shaping the profiles in a die from one piece of cut metal sheet. According to said method, a convex or concave rounding produced on the edges of a longitudinal section results in material excess or material shortage in the transition regions, thereby preventing the material thinning or thickening in said transition regions during forming.
REFERENCES:
patent: 1805283 (1931-05-01), Hammerstrom
patent: 1879078 (1932-09-01), Carlsen
patent: 3802239 (1974-04-01), Karmann et al.
patent: 4148426 (1979-04-01), Midzutani et al.
patent: 4460118 (1984-07-01), Ataka et al.
patent: 4603806 (1986-08-01), Watanabe et al.
patent: 4606208 (1986-08-01), Williamson
patent: 4628721 (1986-12-01), Williamson
patent: 5657922 (1997-08-01), Lowery et al.
patent: 5743122 (1998-04-01), Rhodes et al.
patent: 5924316 (1999-07-01), Streubel et al.
patent: 6247344 (2001-06-01), Eipper
patent: 6748786 (2004-06-01), Ooyauchi et al.
patent: 6883552 (2005-04-01), Ooyauchi et al.
patent: 2005/0257591 (2005-11-01), Hauger et al.
patent: 199 05 365 (2000-08-01), None
Flehmig Thomas
Hömig Lothar
Kneiphoff Uwe
Bonk Teresa M
Proskauer Rose LLP
Ross Dana
ThyssenKrupp Steel Europe AG
LandOfFree
Method for producing from a metal sheet a hollow profile... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for producing from a metal sheet a hollow profile..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing from a metal sheet a hollow profile... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4078491