Heat lamps for zone heating
US6465761B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2001 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Jul 23, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C16/481
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A reactor chamber is positioned between a top array of heat lamps and a bottom array of heat lamps. At least one of the heat lamps forming the top and bottom arrays features a segmented filament such that power output along the length of the heat lamp differs. In one configuration, the heat lamp has a pair of high energy output regions spaced from each other by a lower energy output region. In some configurations, at least one of the heat lamps forming the top and bottom arrays is non-linear, such as U-shaped. In further configurations, a non-linear heat lamp has a segmented filament with segments or areas of different winding density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.