Process for mounting lugs and/or projections on a thin metal sheet and a thin metal sheet having lugs and/or projections as well as a rectangular tube made of thin metal sheets
US6070616A · kind A · utility
6Cited by
13References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1997 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Dec 22, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S138/11
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A process for mounting lugs or projections on a thin metal sheet, by forming the lugs and/or projections out of the thin metal sheet by way of massive forming. Such a thin metal sheet in the form of a thin sheet metal strip is used preferably for forming rectangular tubes for an exhaust gas heat transfer device which, for guiding the exhaust gas, is provided with a bundle of these rectangular tubes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.