Patent US3227141A successfully refreshed from Google Patents.
US3227141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waste heat recovery systems
Assignee: Reavell and Co Ltd
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Filing: 1961-03-22
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Granted: 1966-01-04
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Expires: 1981-03-22
Abstract
No abstract record available.
Inventors
- 👤 Fahie William Cusack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:25
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/38; C21C5/40; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A WASTE HEAT RECOVERY SYSTEM COMPRISING, (A) A DUCT OPERABLE TO CONVEY WASTE GASES FROM A COMBUSTION PROCESS TO ATMOSPHERE; (B) MEANS FOR INTRODUCING SUFFICIENT AIR INTO SAID DUCT TO REACT WITH THE COMBUSTIBLE CONSTITUENTS OF SAID WASTE GASES; (C) A WASTE HEAT BOILER OPERABLE TO COMBINE SAID WASTE GASES AND SAID INTRODUCED AIR PROVIDED BY SAID INTRODUCING MEANS FOR BURNING SAID COMBUSTIBLE CONSTITUENTS; (D) HEAT EXCHANGER MEANS POSITIONED IN SAID DUCT FOR REMOVING HEAT GENERATED BY SAID WASTE HEAT BOILER; (E) MEASURING MEANS POSITIONED IN SAID DUCT FOR GENERATING A SIGNAL INDICATIVE OF FLOW RATE CHANGES OF SAID WASTES GASES; AND (F) CONTROL MEANS RESPONSIVE TO SAID SIGNAL FOR MAINTAINING SAID FLOW RATE OF SAID WASTE GASES AT A PREDETERMINED VALUE.
Claim 2
Dependent Claim
122 words
A WASTE HEAT RECOVERY SYSTEM COMPRISING, (A) A DUCT OPERABLE TO CONVEY WASTE GASES FROM A COMBUSTION PROCESS TO ATMOSPHERE; (B) MEANS FOR INTRODUCING SUFFICIENT AIR INTO SAID DUCT TO REACT WITH THE COMBUSTIBLE CONSTITUENTS OF SAID WASTE GASES; (C) A WASTE HEAT BOILER OPERABLE TO COMBINE SAID WASTE GASES AND SAID INTRODUCED AIR PROVIDED BY SAID INTRODUCING MEANS FOR BURNING SAID COMBUSTIBLE CONSTITUENTS; (D) HEAT EXCHANGER MEANS POSITIONED IN SAID DUCT FOR REMOVING HEAT GENERATED BY SAID WASTE HEAT BOILER; (E) MEASURING MEANS POSITIONED IN SAID DUCT FOR GENERATING A SIGNAL INDICATIVE OF FLOW RATE CHANGES OF SAID WASTES GASES; AND (F) CONTROL MEANS RESPONSIVE TO SAID SIGNAL FOR MAINTAINING SAID FLOW RATE OF SAID WASTE GASES AT A PREDETERMINED VALUE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |