Patent US2349112A successfully refreshed from Google Patents.
Patent US3012848A successfully refreshed from Google Patents.
US3012848A
Expired / Lapsed
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Method for sensing degree of fluidization in a fluidized bed
Assignee: Individual
•
Filing: 1958-11-12
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Granted: 1961-12-12
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Expires: 1978-11-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Ralph P Levey
- 👤 Andrew H Fowler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:09
CPC Classifications
G; G01; G01N; G01N11/00; G01N11/10; G01N11/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
THE METHOD OF CONTROLLING THE RATE OF GAS FLOW INTO A FLUID-BED REACTOR, INTO WHICH POWDER MATERIAL AND GAS ARE FED, SO AS TO OBTAIN SUBSTANTIALLY COMPLETE FLUIDIZATIONOF SAID METERIAL WITHIN SAID REACTOR, COMPRISING THE STEPS OF: FEEDING SAID POWDER MATERIAL INTO SAID REACTOR AT A SELECTED CONTROLLED RATE, FEEDING SAID GAS INTO SAID REACTOR AND THROUGH SAID POWDER MATEIRAL AT A CONTROLLED RATE, VIBRATING A SPRING-SUPPORTED ROD PARTIALLY IMMERSED IN SAID MATERIAL AT THE RESONANT FREQUENCY OF SAID ROD, CONTINUOUSLY GENERATING A SIGNAL PROPORTIONAL TO THE AMPLITUDE OF VIBRATION OF SAID ROD, SAID AMPLITUDE OF VIBRATION BEING A MEASURE OF THE DEGREE OF FLUIDIZATION WITHIN SAID REACTOR UP TO A THRESHOLD WHERE COMPLETE FLUIDIZATION TAKES PLACE,
Claim 2
Independent Claim
117 words
THE METHOD OF CONTROLLING THE RATE OF GAS FLOW INTO A FLUID-BED REACTOR, INTO WHICH POWDER MATERIAL AND GAS ARE FED, SO AS TO OBTAIN SUBSTANTIALLY COMPLETE FLUIDIZATIONOF SAID METERIAL WITHIN SAID REACTOR, COMPRISING THE STEPS OF: FEEDING SAID POWDER MATERIAL INTO SAID REACTOR AT A SELECTED CONTROLLED RATE, FEEDING SAID GAS INTO SAID REACTOR AND THROUGH SAID POWDER MATEIRAL AT A CONTROLLED RATE, VIBRATING A SPRING-SUPPORTED ROD PARTIALLY IMMERSED IN SAID MATERIAL AT THE RESONANT FREQUENCY OF SAID ROD, CONTINUOUSLY GENERATING A SIGNAL PROPORTIONAL TO THE AMPLITUDE OF VIBRATION OF SAID ROD, SAID AMPLITUDE OF VIBRATION BEING A MEASURE OF THE DEGREE OF FLUIDIZATION WITHIN SAID REACTOR UP TO A THRESHOLD WHERE COMPLETE FLUIDIZATION TAKES PLACE,
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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) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |