Heat insulating screen
US4048978A · kind A · utility
40Cited by
9References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1975 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | Apr 21, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/315
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A heat insulating screen forming a part of an oven or furnace comprising two or more sheets of glass of vitrocrystalline material mounted in facing relationship, one sheet providing one exterior face of the screen having been subjected to a chemical tempering treatment, the other sheet providing the other exterior face of the screen having improved thermal properties which are obtained either by utilizing a borosilicate glass which has a coefficient of thermal expansion of less than 5 x 10.sup.-6 /.degree. C or a sheet bearing at least one coating capable of screening off a significant amount of incident infrared radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.