Furnace enclosure having a clear viewpath
US4918705A · kind A · utility
1Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1989 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | Jul 6, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D2099/0031
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A clear optical path is provided in a furnace in which high intensity top surface heating is carried out. The path extends through a viewport to the interior of the furnace chamber. The path extends to a clear metal mirror surface and from the mirror surfaced to other portions of the furnace chamber which are not viewable directly through the viewport.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.