Heat-treating apparatus
US4943235A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1988 |
| Grant date | Jul 24, 1990 |
| Priority date | — |
| Expiry date | Nov 25, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D7/06
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A heat-treating apparatus comprises a heat-treating furnace which include a process tube arranged so as to set its longitudinal direction vertically and having inlet and exhaust ports for a reaction gas, a heater arranged around the process tube, a capping member for capping an opening for allowing an heat-treating object to be loaded therethrough, which is formed in the lower end of the process tube, a case for covering a portion between the process tube and the capping member, and an exhaust nozzle, coupled to the the exhaust port formed in the process tube, for introducing the exhaust waste gas to the outside of the heat-treating apparatus. An exhaust nozzle is arranged in the case so as to introduce the waste gas leaking from between the process tube and the capping member to the outside of the heat-treating apparatus, thereby preventing the leaked gas from being diffused around the heat-treating apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.