US3199212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidized particle heat exchange
Assignee: Safran Aircraft Engines SAS
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Filing: 1960-03-16
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Granted: 1965-08-10
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Expires: 1980-03-16
Abstract
No abstract record available.
Inventors
- 👤 Foure Claude Desine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:41
CPC Classifications
F; F28; F28D; F28D13/00; F28F; F28F13/00; F28F13/02; F28F27/00; F28F27/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN A PROCESS FOR HEAT EXCHANGE BETWEEN A FLUID FLOW IN A GIVEN DIRECTION AND A STATIONARY HEAT EXCHANGE SURFACE, THE STEPS OF INTRODUCING SOLID PARTICLES INTO THE FLUID FLOW, INDUCING IN THE FLUID FLOW A PLURALITY OF ELEMENTARY FLOWS SUBSTANTIALLY PARALLEL TO THE SAME DIRECTION, EACH OF SAID ELEMENTARY FLOWS HAVING A STEADY HELICL MOVEMENT ABOUT AN AXIS PARALLEL TO SAID DIRECTION, EACH OF SAID ROTATING ELEMENTARY FLOWS SWEEPING A PART OF THE HEAT EXCHANGE SURFACE AND BEING BORDERED BY AT LEAST ONE ADJACENT ELEMENTARY FLOW, ADJACENT ELEMENTARY FLOWS ROTATING IN OPPOSITE DIRECTIONS.
Claim 2
Dependent Claim
94 words
IN A PROCESS FOR HEAT EXCHANGE BETWEEN A FLUID FLOW IN A GIVEN DIRECTION AND A STATIONARY HEAT EXCHANGE SURFACE, THE STEPS OF INTRODUCING SOLID PARTICLES INTO THE FLUID FLOW, INDUCING IN THE FLUID FLOW A PLURALITY OF ELEMENTARY FLOWS SUBSTANTIALLY PARALLEL TO THE SAME DIRECTION, EACH OF SAID ELEMENTARY FLOWS HAVING A STEADY HELICL MOVEMENT ABOUT AN AXIS PARALLEL TO SAID DIRECTION, EACH OF SAID ROTATING ELEMENTARY FLOWS SWEEPING A PART OF THE HEAT EXCHANGE SURFACE AND BEING BORDERED BY AT LEAST ONE ADJACENT ELEMENTARY FLOW, ADJACENT ELEMENTARY FLOWS ROTATING IN OPPOSITE DIRECTIONS.
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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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |