Tube forming method
US4210477A · kind A · utility
20Cited by
4References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1978 |
| Grant date | Jul 1, 1980 |
| Priority date | — |
| Expiry date | Jun 30, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1013
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A laminate of non-ferrous metal foil and heat softenable material is folded to tubular form to juxtapose the margins and the margins are heat sealed by passing the tube through an inductance coil; the inductance field may be intensified by a ferrite bar located in a mandrel over which the tube is fed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.