US3224679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion device for hydrocarbon fuel
Assignee: Shell USA Inc
•
Filing: 1963-02-07
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Granted: 1965-12-21
•
Expires: 1983-02-07
Abstract
No abstract record available.
Inventors
- 👤 Robert W Kear
- 👤 Alan H Lancashire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:32
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/20; F23D14/22; F23D11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A COMBUSTION DEVICE FOR HYDROCARBON FUEL COMPRISING: A CUP-SHAPED FLAME CHAMBER ADAPTED TO BE CONNECTED TO A HEATING OR REACTION CHAMBER, SAID FLAME CHAMBER HAVING A GREATER DIAMETER THAN DEPTH AND A SUBSTANTIALLY FLAT BOTTOM WALL: SAID FLAME CHAMBER HAVING A HOLLOW LIQUID COOLED SIDEWALL INCLUDING AN INTERMEDIATE CIRCULAR BAFFLE TERMINATING NEAR THE OPEN END OF THE FLAME CHAMBER TO FORM TWO CONCENTIC ANNULAR COOLING CHANNELS THROUGH WHICH A COOLING MEDIUM MAY CIRCULATE; A BURNER NOZZLE DISPOSED IN THE CENTER OF THE BOTTOM WALL OF THE FLAME CHAMBER FOR SUPPORTING FUEL AND AN OXIDIZING MEDIUM TO THE FLAME CHAMBER, SAID BURNER
Claim 2
Dependent Claim
101 words
A COMBUSTION DEVICE FOR HYDROCARBON FUEL COMPRISING: A CUP-SHAPED FLAME CHAMBER ADAPTED TO BE CONNECTED TO A HEATING OR REACTION CHAMBER, SAID FLAME CHAMBER HAVING A GREATER DIAMETER THAN DEPTH AND A SUBSTANTIALLY FLAT BOTTOM WALL: SAID FLAME CHAMBER HAVING A HOLLOW LIQUID COOLED SIDEWALL INCLUDING AN INTERMEDIATE CIRCULAR BAFFLE TERMINATING NEAR THE OPEN END OF THE FLAME CHAMBER TO FORM TWO CONCENTIC ANNULAR COOLING CHANNELS THROUGH WHICH A COOLING MEDIUM MAY CIRCULATE; A BURNER NOZZLE DISPOSED IN THE CENTER OF THE BOTTOM WALL OF THE FLAME CHAMBER FOR SUPPORTING FUEL AND AN OXIDIZING MEDIUM TO THE FLAME CHAMBER, SAID BURNER
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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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |