US3250236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion apparatus and method of operation
Assignee: Avco Corp
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Filing: 1963-09-27
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Granted: 1966-05-10
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Expires: 1983-09-27
Abstract
No abstract record available.
Inventors
- 👤 Zelinski Joseph John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:53
CPC Classifications
H; H02; H02K; H02K44/00; H02K44/08; C; C21; C21B; C21B5/00; C21B5/001; C21B5/003; F; F23; F23D; F23D1/00; Y; Y02; Y02E; Y02E20/00; Y02E20/34; Y02P; Y02P10/00; Y02P10/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN COMBUSTION APPARATUS FOR BURNING PULVERIZED COAL THE COMBINATION COMPRISING: (A) A DUCT DEFINING A PATH FOR COMBUSTION-SUPPORTING GAS; (B) MEANS FOR HEATING SAID GAS TO A TEMPERATURE SUFFICIENT TO EFFECT THE RELEASE OF COMBUSTIBLE VOLATILE MATTER IN COAL; (C) MEANS FOR SUPPORTING SAID HEATED GAS TO SAID DUCT; (D) MIXING MEANS HAVING AN INLET END FOR RECEIVING SAID HEATED GAS FROM SAID DUCT AND PULVERIZED COAL AND AN OUTLET END FOR EXHAUSTING SAID GAS AND COAL AT SUBSONIC VELOCITIES; (E) MEANS COMMUNICATING WITH THE INLET END OF SAID MIXING MEANS FOR INTRODUCING PUULVERIZED COAL INTO SAID HEATED GAS AT A VELOCITY LESS THAN THAT OF SAID HEATED GAS, SAID MIXING MEANS HAVING A LENGTH IN THE DIRECTION OF FLOW OF SAID GAS SUFFICIENT TO PROVIDE
Claim 2
Dependent Claim
126 words
IN COMBUSTION APPARATUS FOR BURNING PULVERIZED COAL THE COMBINATION COMPRISING: (A) A DUCT DEFINING A PATH FOR COMBUSTION-SUPPORTING GAS; (B) MEANS FOR HEATING SAID GAS TO A TEMPERATURE SUFFICIENT TO EFFECT THE RELEASE OF COMBUSTIBLE VOLATILE MATTER IN COAL; (C) MEANS FOR SUPPORTING SAID HEATED GAS TO SAID DUCT; (D) MIXING MEANS HAVING AN INLET END FOR RECEIVING SAID HEATED GAS FROM SAID DUCT AND PULVERIZED COAL AND AN OUTLET END FOR EXHAUSTING SAID GAS AND COAL AT SUBSONIC VELOCITIES; (E) MEANS COMMUNICATING WITH THE INLET END OF SAID MIXING MEANS FOR INTRODUCING PUULVERIZED COAL INTO SAID HEATED GAS AT A VELOCITY LESS THAN THAT OF SAID HEATED GAS, SAID MIXING MEANS HAVING A LENGTH IN THE DIRECTION OF FLOW OF SAID GAS SUFFICIENT TO PROVIDE
References Cited (Backward Citations)
GB218701A
Cited
US2908733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |