Patent US3563519A successfully refreshed from Google Patents.
US3563519A
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Installations for preheating pulverulent substances by the waste gases of a furnace for treating the substances
Assignee: CREUSOT FORGES ATELIERS
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Filing: 1969-03-11
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Granted: 1971-02-16
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Expires: 1989-03-11
Abstract
Abstract An installation for preheating pulverulent substances by the waste gases of a furnace for treating the substances, in which a fraction of the preheating gases having passed through the preheaters of the installation feeds of a recycling circuit at at least two places of reintroduction into the reheating cycle, the fraction being taken from a fan sucking in the gases passing through the installation flow in one branch being controlled in response to temperature and in the other branch in response to flow in the preheating circuit.
Inventors
- 👤 Jean-Pierre Lippmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:55
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/2016; F27B7/2025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |