Patent US2992084A successfully refreshed from Google Patents.
US2992084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for regulating the composition of a mixture of air and fuel-gas
Assignee: Le Four Industriel Belge SA
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Filing: 1957-08-16
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Granted: 1961-07-11
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Expires: 1977-08-16
Abstract
No abstract record available.
Inventors
- 👤 Schropp Rudolf Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:45
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/60; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
220 words
AN APPARATUS FOR MAINTAINING CONSTANT THE COMPOSITION OF A MIXTURE OF AIR AND FUEL-GAS IN A DISTRIBUTION PIPING, COMPRISING A CONVERGENT NOZZLE, MEANS FOR FEEDING THIS CONVERGENT NOZZLE WITH ONE OF THE TWO CONSTITUENTS OF THE MIXTURE, A CYLINDRICAL PIPE COAXIAL WITH SAID CONVERGENT NOZZLE EXTENDING AT THE OUTLET OF THE LATTER, SUBSTANTIALLY CYLINDRICAL PIPE MEANS SURROUNDING THE PIPE COAXIALLY WITH THE LATTER, A CHAMBER WITH INLET MEANS SURROUNDING THE CONVERGENT NOZZLE FOR FEEDING SAID PIPE MEANS WITH THE OTHER OF THE CONSTITUENTS OF THE MIXTURE, DIVERGENT NOZZLE MEANS INTO WHICH THE TWO CONSTITUENTS OF THE MIXTURE ARE DELIVERED AND CONNECTED TO THE OUTLET ORIFICE OF SAID PIPE MEANS, SAID CYLINDRICAL PIPE EXTENDING TO A POINT NEAR SAID OUTLET ORIFICE, SAID DIVERGENT NOZZLE MEANS HAVING THE SAME AXIS AS SAID CONVERGENT NOZZLE AND HAVING A MAXIMUM TOP OPENING ANGLE OF 16*, A MIXING CHAMBER AT THE OUTLET OF THE DIVERGENT NOZZLE MEANS AND PRESSURE-REGULATOR MEANS COMMUNICATING WITH SAID MIXING CHAMBER AND WITH THE INLET MEANS OF SAID CHAMBER SURROUNDING THE CONVERGENT NOZZLE AND MAINTAINING IN THIS LAST CHAMBER THE SAME PRESSURE AS THAT PREVAILING IN THE MIXING CHAMBER, SAID PIPE MEANS COACTING WITH THE PRESSURE MAINTAINED IN THE CHAMBER SURROUNDING THE CONVERGENT NOZZLE TO MAINTAIN EQUAL THE SPEEDS OF THE TWO-CONSTITUENTS IN THE PLANE OF THE OUTLET OF THE PIPE.
Claim 2
Independent Claim
220 words
AN APPARATUS FOR MAINTAINING CONSTANT THE COMPOSITION OF A MIXTURE OF AIR AND FUEL-GAS IN A DISTRIBUTION PIPING, COMPRISING A CONVERGENT NOZZLE, MEANS FOR FEEDING THIS CONVERGENT NOZZLE WITH ONE OF THE TWO CONSTITUENTS OF THE MIXTURE, A CYLINDRICAL PIPE COAXIAL WITH SAID CONVERGENT NOZZLE EXTENDING AT THE OUTLET OF THE LATTER, SUBSTANTIALLY CYLINDRICAL PIPE MEANS SURROUNDING THE PIPE COAXIALLY WITH THE LATTER, A CHAMBER WITH INLET MEANS SURROUNDING THE CONVERGENT NOZZLE FOR FEEDING SAID PIPE MEANS WITH THE OTHER OF THE CONSTITUENTS OF THE MIXTURE, DIVERGENT NOZZLE MEANS INTO WHICH THE TWO CONSTITUENTS OF THE MIXTURE ARE DELIVERED AND CONNECTED TO THE OUTLET ORIFICE OF SAID PIPE MEANS, SAID CYLINDRICAL PIPE EXTENDING TO A POINT NEAR SAID OUTLET ORIFICE, SAID DIVERGENT NOZZLE MEANS HAVING THE SAME AXIS AS SAID CONVERGENT NOZZLE AND HAVING A MAXIMUM TOP OPENING ANGLE OF 16*, A MIXING CHAMBER AT THE OUTLET OF THE DIVERGENT NOZZLE MEANS AND PRESSURE-REGULATOR MEANS COMMUNICATING WITH SAID MIXING CHAMBER AND WITH THE INLET MEANS OF SAID CHAMBER SURROUNDING THE CONVERGENT NOZZLE AND MAINTAINING IN THIS LAST CHAMBER THE SAME PRESSURE AS THAT PREVAILING IN THE MIXING CHAMBER, SAID PIPE MEANS COACTING WITH THE PRESSURE MAINTAINED IN THE CHAMBER SURROUNDING THE CONVERGENT NOZZLE TO MAINTAIN EQUAL THE SPEEDS OF THE TWO-CONSTITUENTS IN THE PLANE OF THE OUTLET OF THE PIPE.
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) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |