Patent US3076604A successfully refreshed from Google Patents.
US3076604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for air heater
Assignee: American Air Filter Co Inc
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Filing: 1959-10-30
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Granted: 1963-02-05
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Expires: 1979-10-30
Abstract
No abstract record available.
Inventors
- 👤 Aubrey H Robson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:28
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/20; F24H9/2064; F24H9/2085; F24H15/00; F24H15/20; F24H15/204; F24H15/208; F24H15/30; F24H15/305; F24H15/31; F24H15/355; F24H15/36; G; G05; G05D; G05D23/00; G05D23/01; G05D23/12; G05D23/125; G05D23/126; G05D23/127; G05D23/128
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
IN AN AIR HEATING SYSTEM INCLUDING A SUBSTANTIALLY CLOSED AIR CIRCULATION PATH: AN AIR HEATER IN SAID PATH; A FLUID FUEL BURNER FOR SAID AIR HEATER INCLUDING A BYPASS TYPE NOZZLE; MEANS FOR SUPPLYING FUEL TO SAID NOZZLE; NOZZLE RETURN CONDUIT MEANS INCLUDING PARALLEL FUEL RETURN CONDUITS CONNECTED TO RECEIVE FUEL BYPASSED THROUGH SAID NOZZLE; A FIRST THROTTLE VALVE IN ONE OF SAID PARALLEL RETURN CONDUITS; MEANS FOR CONTROLLING SAID FIRST THROTTLE VALVE BY OPENING AND CLOSING SAID VALVE IN RESPONSE TO DISCHARGE AIR TEMPERATURES PRODUCED BY SAID BURNER RESPECTIVELY ABOVE AND BELOW A DISCHARGE AIR TEMPERATURE SELECTED FROM A FIRST TEMPERATURE RANGE; A SECOND THROTTLE VALVE IN THE OTHER OF SAID PARALLEL RETURN CONDUITS; AND MEANS FOR CONTROLLING SAID SECOND THROTTLE VALVE BY OPENING AND CLOSING SAID VALVE IN RESPONSE TO THE TEMPERATURE OF AIR RETURNED TO SAID HEATER FROM SAID SPACE BEING RESPECTIVELY ABOVE AND BELOW AN INLET AIR TEMPERATURE SELECTED FROM A SECOND RELATIVELY LOWER TEMPERATURE RANGE
Claim 2
Dependent Claim
160 words
IN AN AIR HEATING SYSTEM INCLUDING A SUBSTANTIALLY CLOSED AIR CIRCULATION PATH: AN AIR HEATER IN SAID PATH; A FLUID FUEL BURNER FOR SAID AIR HEATER INCLUDING A BYPASS TYPE NOZZLE; MEANS FOR SUPPLYING FUEL TO SAID NOZZLE; NOZZLE RETURN CONDUIT MEANS INCLUDING PARALLEL FUEL RETURN CONDUITS CONNECTED TO RECEIVE FUEL BYPASSED THROUGH SAID NOZZLE; A FIRST THROTTLE VALVE IN ONE OF SAID PARALLEL RETURN CONDUITS; MEANS FOR CONTROLLING SAID FIRST THROTTLE VALVE BY OPENING AND CLOSING SAID VALVE IN RESPONSE TO DISCHARGE AIR TEMPERATURES PRODUCED BY SAID BURNER RESPECTIVELY ABOVE AND BELOW A DISCHARGE AIR TEMPERATURE SELECTED FROM A FIRST TEMPERATURE RANGE; A SECOND THROTTLE VALVE IN THE OTHER OF SAID PARALLEL RETURN CONDUITS; AND MEANS FOR CONTROLLING SAID SECOND THROTTLE VALVE BY OPENING AND CLOSING SAID VALVE IN RESPONSE TO THE TEMPERATURE OF AIR RETURNED TO SAID HEATER FROM SAID SPACE BEING RESPECTIVELY ABOVE AND BELOW AN INLET AIR TEMPERATURE SELECTED FROM A SECOND RELATIVELY LOWER TEMPERATURE RANGE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |