Method for the manufacture of a vacuum insulating structure and an insulating structure so produced
US4938667A · kind A · utility
7Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 28, 1989 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | Jun 28, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2201/14
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method is described for the manufacture of a vacuum insulating structure intended mainly, but not exclusively, for use in such domestic appliances as refrigerators or freezers as well as for vehicle walls including aeroplanes and in buildings. A hollow plastic or metal panel is purged to atmospheric air by means of a getterable gas. Vacuum is produced by removing the purge gas and the vacuum is subsequently maintained by contacting the residual gas with a getter material. A vacuum insulating structure thus manufactured is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.