US3588060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enamelling tunnel-type furnace
Assignee: Le Four Industriel Belge SA
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Filing: 1969-04-22
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Granted: 1971-06-28
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Expires: 1989-04-22
Abstract
Abstract AN ENAMELLING TUNNEL TYPE FURNACE COMPRISING AT LEAST ONE SUPPORT MOVABLE ENTIRELY INSIDE THE CURING CHAMBER OF THE FURNACE ALONG THE LONGITUDINAL AXIS OF THE FURNACE. THE SUPPORT CARRIES THE ARTICLES TO BE HEATED. THE CURING CHAMBER IS TIGHTLY CLOSED AND BURNERS ARE FITTED INTO AT LEAST ONE OF THE WALLS OF THE CURING CHAMBER, AT A LEVEL POSITIONED ABOVE THE BASE OF SUPPORT, UNDER THE ARTICLE. AN OPENING IS PROVIDED BETWEEN THE BASE AND THE ARTICLE, SO THAT HEATING THE ARTICLES DEPOSITED ON THE SUPPORT BY CONVECTION IS POSSIBLE BY MEANS OF THE JETS OF WASTE GASES ORIGINATING FROM THE BURNERS AND DIRECTED TRANSVERSELY TO THE LONGITUDINAL AXIS OF THE CURING CHAMBER.
Inventors
- 👤 Fernand Victor Francoi Hermans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:24
CPC Classifications
C; C23; C23D; C23D9/00; C23D9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |