US3561895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of fuel gas combustion properties in inspirating burners
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1969-06-02
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Granted: 1971-02-09
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Expires: 1989-06-02
Abstract
Abstract INSPIRATED AIR IN INSPIRATING TYPE BURNERS IS MAINTAINED CONSTANT AT A GIVEN LEVEL OF FIRING EVEN THOUGH ONE FUEL MAY BE CHANGED FOR ANOTHER BY MAINTAINING THE MOMENTUM FLOW OF FUEL THROUGH THE BURNER AT A SUBSTANTIALLY CONSTANT LEVEL, THE CONSTANT MOMENTUM FLOW BEING MAIN- TAINED BY HEATING OR COOLING THE FUEL IN RESPONSE TO THE DENSITY VARIATION OF A NEW FUEL IN RELATION TO THE DENSITY OF THE ORIGINAL FUEL, AND SUPPLEMENTALLY BY ADDING ENRICHING OR DILUTING GASES TO THE NEW FUEL.
Inventors
- 👤 Herbert D Michelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:11
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/02; F23D14/04; F23K; F23K5/00; F23K5/002; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391; Y10T137/2496; Y10T137/2499; Y10T137/2504
Claims Analysis
Total Claims: 0
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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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |