US2955991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for heating agglutinating coal
Assignee: Wood Associates Inc
•
Filing: 1955-02-24
•
Granted: 1960-10-11
•
Expires: 1975-02-24
Abstract
No abstract record available.
Inventors
- 👤 Harold G Tufty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:29
CPC Classifications
C; C10; C10B; C10B53/00; C10B53/08; C10B7/00; C10B7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A CONTINUOUS APPARATUS ADAPTED FOR HEATING FINELY DIVIDED AGGLUTINATING COAL UNDER NON-COMBUSTING BUT AGGLUTINATING CONDITIONS COMPRISING A CLOSED RETORT, AN ENDLESS CONVEYOR MOUNTED FOR MOVEMENT WITHIN SAID RETORT, MEANS FOR FEEDING TWO STREAMS OF GRANULAR NON-AGGLUTINATING MATERIAL TO SAID RETORT, MEANS FOR PRE-HEATING SAID NON-AGGLUTINATING MATERIAL BEING FED TO A TEMPERATURE ABOVE THE AGGLUTINATING POINT OF THE COAL, MEANS FOR SPREADING ONE OF SAID STREAMS OF NON-AGGLUTINATING MATERIAL INTO A THIN LAYER ON SAID CONVEYOR ADJACENT ONE END THEREOF, MEANS FOR FEEDING A STREAM OF THE COAL TO SAID RETORT, MEANS WITHIN SAID RETORT FOR EFFECTING UNCONFINED CO-MINGLING OF SAID COAL STREAM AND SAID OTHER STREAM OF NON-AGGLUTINATING MATERIAL IN THE OPEN SPACE ABOVE SAID CONVEYOR WITHIN THE RETORT AND FOR DEPOSITING THE CO-
Claim 2
Dependent Claim
124 words
A CONTINUOUS APPARATUS ADAPTED FOR HEATING FINELY DIVIDED AGGLUTINATING COAL UNDER NON-COMBUSTING BUT AGGLUTINATING CONDITIONS COMPRISING A CLOSED RETORT, AN ENDLESS CONVEYOR MOUNTED FOR MOVEMENT WITHIN SAID RETORT, MEANS FOR FEEDING TWO STREAMS OF GRANULAR NON-AGGLUTINATING MATERIAL TO SAID RETORT, MEANS FOR PRE-HEATING SAID NON-AGGLUTINATING MATERIAL BEING FED TO A TEMPERATURE ABOVE THE AGGLUTINATING POINT OF THE COAL, MEANS FOR SPREADING ONE OF SAID STREAMS OF NON-AGGLUTINATING MATERIAL INTO A THIN LAYER ON SAID CONVEYOR ADJACENT ONE END THEREOF, MEANS FOR FEEDING A STREAM OF THE COAL TO SAID RETORT, MEANS WITHIN SAID RETORT FOR EFFECTING UNCONFINED CO-MINGLING OF SAID COAL STREAM AND SAID OTHER STREAM OF NON-AGGLUTINATING MATERIAL IN THE OPEN SPACE ABOVE SAID CONVEYOR WITHIN THE RETORT AND FOR DEPOSITING THE CO-
References Cited (Backward Citations)
US167914A
Cited
US1319426A
Cited
US1698345A
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US1831512A
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US1659337A
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US1978945A
Cited
US1964878A
Cited
US1952363A
Cited
US2177226A
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US2335611A
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US2640016A
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US2674581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |