Method for making double-walled insulating metal container
US5153977A · kind A · utility
65Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1991 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Feb 1, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49879
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
This invention relates to a method of making a double-walled thermally insulating metal container comprising an inner casing and an outer casing having an evacuation opening. A quantity of joining material is placed near or on the evacuation opening so as to cover the opening partially or completely. The assembly is treated in a vacuum furnace to evacuate the insulating space, to melt the joining material and to solidify the joining material in situ to provide vacuum sealing without resorting to a conventional sealing plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.