Furnace for heat treating objects under high pressure
Abstract
Abstract A CYLINDRICAL FURNACE FOR TREATING MATERIAL AT HIGH TEMPERATURE IN A GASEOUS ATMOSPHERE UNDER HIGH PRESSURE INCLUDES A PRESSURE CHAMBER AND AN INSULATING HOLLOW BODY ARRANGED INSIDE THE PRESSURE CHAMBER WITH A SPACE THEREBETWEEN. THE INSULATING BODY INCLUDES A CYLINDRICAL SHEATH HAVING AN INSULATING LID AND BOTTOM SEALING ITS ENDS. A FURNACE CHAMBER IS ARRANGED WITHIN THE INSULATING HOLLOW BODY. CONNECTIONS ARE PROVIDED NEAR THE TOP AND BOTTOM OF THE FURNACE CHAMBER BETWEEN THE FURNACE CHAMBER AND THE SPACE. AN ARRANGEMENT IS ALSO PROVIDED FOR NORMALLY OBSTRUCTING THROUGH-FLOW THROUGH AT LEAST ONE OF THESE CONNECTIONS. THIS MEMBER CAN BE OPENED, FOR EXAMPLE BY MELTING A PART OF IT, BY A FLOW OF ELECTRICAL CURRENT OR DESTROYING SUCH A PART BY AN EXPLOSION, SO AS TO PERMIT GAS INFLUENCED BY PRESSURE DIFFERENCES DUE TO THE TEMPERATURE DIFFERENCE TO FLOW OUT OF THE FURNACE CHAMBER AND DOWN BETWEEN THE HOLLOW BODY AND THE WALL OF THE PRESSURE CHAMBER SO AS TO BE COOLED BY THE WALL OF THE PRESSURE CHAMBER.
Inventors
- 👤 Hans Lundstrom
Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |