US2563322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pebble heater
Assignee: Babcock and Wilcox Co
•
Filing: 1946-10-26
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Granted: 1951-08-07
•
Expires: 1966-10-26
Abstract
No abstract record available.
Inventors
- 👤 George D Ebbets
- 👤 Ralph M Hardgrove
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:27
CPC Classifications
F; F28; F28C; F28C3/00; F28C3/10; F28C3/12; F28C3/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
122 words
A SOLID AND GAS CONTACT DEVICE COMPRISING RADIALLY SPACED COAXIAL CYLINDRICAL WALLS DEFINING AN ANNULAR CHAMBER THEREBETWEEN AND A CENTRALLY LOCATED COMBUSTION CHAMBER, A HEATING GAS OUTLET AT THE UPPER END OF SAID ANNULAR CHAMBER, AND INVERTED FRUSTO-CONICAL BOTTOM EXTENDING DOWNWARDLY FROM THE OUTER OF SAID CYLINDRICAL WALS TO A CENTRALLY LOCATED OUTLET, A PLURALITY OF CIRCULARLY SPACED PIERS RESTING UPON SAID FRUSTOCONICAL BOTTOM AND SUPPORTING THE INNER OF SAID CYLINDRICAL WALLS, INTRODUCING MEAND FOR MAINTAINING A SUBSTANTIALLY UNIFORM DEPTH OF A DOWNWARDLY MOVING MASS OF GAS-PREVIOUS FLUENT SOLID MATERIAL IN SAID ANNULAR CHAMBER, AND MEANS FOR BURNING A FUEL WITHIN SAID COMBUBTION CHAMBER AND HEATING SAID FLUENT SOLID MATERIAL BY DIRECT CONTACT COUNTERCURRENT FLOW RELATIONSHIP WITH THE HEATING GAS SO GENERATED.
References Cited (Backward Citations)
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Cited
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US1576916A
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US1669012A
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US1989072A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |