Ingot pusher furnace with rail drawbridges
US4938690A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1989 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | Jun 12, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27M2001/1552
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An ingot pusher furnace includes means for reducing heat loss from the charging and discharging ends of the furnace so as to produce a more efficient and uniform heating of the ingots. The pusher furnace includes support rails which extend between a first opening in the front wall and a second opening in the rear wall and terminates inside of the charging and discharging doors. The charging and discharging doors extend below the support rails in their closed position so as to provide a positive seal. A first rail drawbridge is arranged adjacent the charging door to facilitate movement of the ingots into the furnace enclosure. The second rail drawbridge is arranged adjacent the discharging door to facilitate movement of the ingots out of the furnace enclosure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.