Patent US3747899A successfully refreshed from Google Patents.
Patent US3176969A successfully refreshed from Google Patents.
US3176969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling pellets
Assignee: Midland Ross Corp
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Filing: 1963-05-13
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Granted: 1965-04-06
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Expires: 1983-05-13
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Storm
- 👤 Frank G Rinker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:51
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/26; F; F27; F27D; F27D15/00; F27D15/02; F27D15/0286
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A PROCESS OF TREATING PELLETS OF FINELY DIVIDED SOLID MATERIAL INVOLVING FEEDING THE PELLETS TO THE UPPER PART OF A COLUMN OF SUCH PELLETS GRAVITATIONALLY DESCENDING THROUGH A GENERALLY VERTICAL SHAFT-TYPE INDURATING FURNACE, HEATING THE PELLETS IN THE UPPER PART OF SAID COLUMN AND THEREAFTER COOLING THE PELLETS BY FORCING A CURRENT OF COOLING GAS THROUGH SUCH PELLETS COLUMN AND FINALLY DISCHARGING THE SO-COLLED PELLETS FROM THE FURNACE THE IMPROVEMENT WHICH CONSISTS IN INTRODUCING THE COOLING GAS INTO THE COLUMN INTERMEDIATE CONFRONTING SIDES OF THE COLUMN, LATERALLY DISENGAGING THE COOLING GAS FROM THE COLUMN THROUGH SLOTTED SCREENS IN CONFRONTING WALLS OF THE FURNACE PARTS OF SAID SLOTTED SCREENS BEING OSCILLATABLE AND OSCILLATING SAID OSCILLATABLE SCREEN PARTS AT INTERVALS SUFFICIENTLY FREQUENT TO PREVENT STOPPAGE OF THE SLOTS OF THE SCREENS BY SOLID PARTICLES LODGED IN SAID SLOTS.
Claim 2
Dependent Claim
137 words
IN A PROCESS OF TREATING PELLETS OF FINELY DIVIDED SOLID MATERIAL INVOLVING FEEDING THE PELLETS TO THE UPPER PART OF A COLUMN OF SUCH PELLETS GRAVITATIONALLY DESCENDING THROUGH A GENERALLY VERTICAL SHAFT-TYPE INDURATING FURNACE, HEATING THE PELLETS IN THE UPPER PART OF SAID COLUMN AND THEREAFTER COOLING THE PELLETS BY FORCING A CURRENT OF COOLING GAS THROUGH SUCH PELLETS COLUMN AND FINALLY DISCHARGING THE SO-COLLED PELLETS FROM THE FURNACE THE IMPROVEMENT WHICH CONSISTS IN INTRODUCING THE COOLING GAS INTO THE COLUMN INTERMEDIATE CONFRONTING SIDES OF THE COLUMN, LATERALLY DISENGAGING THE COOLING GAS FROM THE COLUMN THROUGH SLOTTED SCREENS IN CONFRONTING WALLS OF THE FURNACE PARTS OF SAID SLOTTED SCREENS BEING OSCILLATABLE AND OSCILLATING SAID OSCILLATABLE SCREEN PARTS AT INTERVALS SUFFICIENTLY FREQUENT TO PREVENT STOPPAGE OF THE SLOTS OF THE SCREENS BY SOLID PARTICLES LODGED IN SAID SLOTS.
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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |