Patent US2639770A successfully refreshed from Google Patents.
Patent US3138710A successfully refreshed from Google Patents.
US3138710A
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Devices for detecting fissionable material jacket bursts in nuclear reactors
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1960-11-14
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Granted: 1964-06-23
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Expires: 1980-11-14
Abstract
No abstract record available.
Inventors
- 👤 Roguin Andre
- 👤 Donguy Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:21
CPC Classifications
G; G21; G21C; G21C17/00; G21C17/02; G21C17/04; G21C17/044; G21C17/045; G01; G01T; G01T7/00; G01T7/02; G01T7/06; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A DEVICE FOR DETECTING FISSIONABLE MATERIAL JACKET BURSTS IN A NUCLEAR REACTOR WHICH COMPRISES, IN COMBINATION, A CASING, A METALLIC DRUM MOVABLE IN SAID CASING, MEANS CARRIED BY SAID CASING FORMING, ADJACENT THE PERIPHERY OF SAID DRUM, A DECAY AND ION FORMATION CHAMBER HAVING AN APERTURE CLOSED IN GASTIGHT FASHION BY A PORTION OF THE PERIPHERY OF SAID DRUM FORMING AN ION COLLECTING AREA, SAID DRUM HAVING THEREFORE A PLURALITY OF COLLECTING AREAS, THE WALLS OF SAID CHAMBER FLARING OFF FROM SAID APERTURE, AT LEAST ONE REPULSION ELECTRODE CARRIED BY THE END OF SAID CHAMBER LOCATED OPPOSITE SAID APERTURE, MEANS FOR BRINGING SAID ELECTRODE TO A HIGH POSITIVE POTENTIAL, MEANS FOR CIRCULATING THROUGH SAID CHAMBER A STREAM OF GAS FROM THE SPACE SURROUNDING AT LEAST ONE FISSIONABLE MATERIAL JACKET, THE VOLUME OF SAID CHAMBER BEING SUCH THAT THIS STREAM REMAINS THEREIN FOR AT LEAST ONE SECOND, A RADIATION DETECTOR CARRIED BY SAID CASING AND MEANS OP-
Claim 2
Independent Claim
156 words
A DEVICE FOR DETECTING FISSIONABLE MATERIAL JACKET BURSTS IN A NUCLEAR REACTOR WHICH COMPRISES, IN COMBINATION, A CASING, A METALLIC DRUM MOVABLE IN SAID CASING, MEANS CARRIED BY SAID CASING FORMING, ADJACENT THE PERIPHERY OF SAID DRUM, A DECAY AND ION FORMATION CHAMBER HAVING AN APERTURE CLOSED IN GASTIGHT FASHION BY A PORTION OF THE PERIPHERY OF SAID DRUM FORMING AN ION COLLECTING AREA, SAID DRUM HAVING THEREFORE A PLURALITY OF COLLECTING AREAS, THE WALLS OF SAID CHAMBER FLARING OFF FROM SAID APERTURE, AT LEAST ONE REPULSION ELECTRODE CARRIED BY THE END OF SAID CHAMBER LOCATED OPPOSITE SAID APERTURE, MEANS FOR BRINGING SAID ELECTRODE TO A HIGH POSITIVE POTENTIAL, MEANS FOR CIRCULATING THROUGH SAID CHAMBER A STREAM OF GAS FROM THE SPACE SURROUNDING AT LEAST ONE FISSIONABLE MATERIAL JACKET, THE VOLUME OF SAID CHAMBER BEING SUCH THAT THIS STREAM REMAINS THEREIN FOR AT LEAST ONE SECOND, A RADIATION DETECTOR CARRIED BY SAID CASING AND MEANS OP-
References Cited (Backward Citations)
GB818685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |