US3293768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating fluidized material
Assignee: Proctor and Schwartz Inc
•
Filing: 1964-03-13
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Granted: 1966-12-27
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Expires: 1984-03-13
Abstract
No abstract record available.
Inventors
- 👤 Albert G Blank
- 👤 John F Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:26
CPC Classifications
F; F26; F26B; F26B3/00; F26B3/02; F26B3/06; F26B3/08; A; A24; A24B; A24B3/00; A24B3/04; B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/36; F26B15/00; F26B15/10; F26B15/12; F26B15/14; F26B15/143; F26B3/092; F26B3/0926; F28; F28C; F28C3/00; F28C3/10; F28C3/12; F28C3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
THE METHOD OF TREATING FLUENT SOLID MATERIAL, WHICH COMPRISES: MOVING THE MATERIAL ALONG CONTINUOUSLY IN A BED ON A TRAVELLING PERFORATE BOTTOM SUPPORT, FORCING CONDITIONED GAS UPWARDLY THROUGH THE MATERIAL IN A SERIES OF LONGITUDINALLY SPACED PARALLEL STREAMS ALONG THE LENGTH OF TRAVEL OF THE SUPPORT TO LIFT AND FLUIDIZE THE MATERIAL IN EACH UPWARDLY FLOWING STREAM OF GAS, AND ABRUPTLY RETURNING AT LEAST A PART OF THE GAS DOWN THROUGH THE BED OF MATERIAL IN A PLURALITY OF DOWNFLOWING STREAMS INTERMEDIATE THE UPFLOWING STREAMS TO REDEPOSIT MATERIAL ON THE BED WITH A KIND OF ROLLING OR TUMBLING OF THE FLUIDIZED MATERIAL WITHIN THE BED.
Claim 2
Independent Claim
105 words
THE METHOD OF TREATING FLUENT SOLID MATERIAL, WHICH COMPRISES: MOVING THE MATERIAL ALONG CONTINUOUSLY IN A BED ON A TRAVELLING PERFORATE BOTTOM SUPPORT, FORCING CONDITIONED GAS UPWARDLY THROUGH THE MATERIAL IN A SERIES OF LONGITUDINALLY SPACED PARALLEL STREAMS ALONG THE LENGTH OF TRAVEL OF THE SUPPORT TO LIFT AND FLUIDIZE THE MATERIAL IN EACH UPWARDLY FLOWING STREAM OF GAS, AND ABRUPTLY RETURNING AT LEAST A PART OF THE GAS DOWN THROUGH THE BED OF MATERIAL IN A PLURALITY OF DOWNFLOWING STREAMS INTERMEDIATE THE UPFLOWING STREAMS TO REDEPOSIT MATERIAL ON THE BED WITH A KIND OF ROLLING OR TUMBLING OF THE FLUIDIZED MATERIAL WITHIN THE BED.
References Cited (Backward Citations)
US1707929A
Cited
US2365769A
Cited
US2502134A
Cited
US2669068A
Cited
GB711042A
Cited
US3214844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |