US3223860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchange system
Assignee: Allis Chalmers Corp
•
Filing: 1962-02-16
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Granted: 1965-12-14
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Expires: 1982-02-16
Abstract
No abstract record available.
Inventors
- 👤 Edward F Brill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:10
CPC Classifications
H; H02; H02K; H02K44/00; H02K44/08; Y; Y10; Y10S; Y10S165/00; Y10S165/909
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
137 words
IN A MHD ELECTRICAL POWER GENERATING PLANT, IN COMBINATION, AN MHD ELECTRICAL GENERATOR, A FURNACE FOR BURNING FUEL AND COMBUUSTION AIR TO PROVIDE HOT COMBUSTION GAS TO SAID GENERATOR, A SOURCE OF HOT LIQUID SLAG, A FIRST HEAT EXCHANGER INTO WHICH COMBUSTION GAS EXHAUSTED FROM SAID GENERATOR IS DIRECTED AND INTO WHICH LIQUID SLAG FROM SAID SOURCE IS DIRECTED AND WHEREIN HEAT IS TRANSFERRED FROM SAID COMBUSTION GAS TO SAID LIQUID SLAG, A SOURCE OF PREHEATED COMBUSTION AIR FOR SAID FURNACE, A SECOND HEAT EXCHANGER INTO WHICH COMBUSTION AIR FROM SAID SOURCE IS DIRECTED AND INTO WHICH LIQUID SLAG FROM SAID FIRST HEAT EXCHANGER IS DIRECTED AND WHEREIN HEAT IS TRANSFERRED FROM SAID SLAG TO SAID COMBUSTION AIR, AND MEANS FOR PUMPING SAID LIQUID SLAG FROM SAID SECOND HEAT EXCHANGGER TO SAID FIRST HEAT EXCHANGER FOR RECIRCULATION.
References Cited (Backward Citations)
US1681926A
Cited
DE1114973B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |