Patent US3249510A successfully refreshed from Google Patents.
US3249510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shutdown apparatus for nuclear reactors
Assignee: General Dynamics Corp
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Filing: 1963-08-05
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Granted: 1966-05-03
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Expires: 1983-08-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur J Dohm
- 👤 David A Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:51
CPC Classifications
G; G21; G21C; G21C9/00; G21C9/02; G21C7/00; G21C7/06; G21C7/08; G21C7/10; G21C9/027; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN A NUCLEAR REACTOR INCLUDING A REACTOR CORE, A CONTROL ROD ASSEMBLY WHICH COMPRISES AN ELONGATED HOUSING ADAPTED TO BE VERTICALLY MOVED WITHIN AND RELATIVE TO THE CORE OF THE REACTOR, SAID HOUSING AHAVING A HOLLOW CENTRAL PORTION AND AN OPEN LOWER END COMMUNICATING THEREWITH, A FILLER OF NEUTRON ABSORBING MATERIAL DISPOSED WITHIN SAID HOLLOW CENTRAL PORTION, AND AN END PLUG CONNECTED TO THE LOWER OPEN END OF SAID HOUSING FOR RELEASABLY CONFINING THE FILLER WITHIN THE HOLLOW CENTRAL PORTION THEREOF, SAID END PLUG BEING AT LEAST PARTIALLY FABRICATED OF A FUSIBLE MATERIAL THAT MELTS WHEN THE CORE TEMPERATURE EXCEEDS A PRESELECTED MAXIMUM TEMPERATURE TO ALLOW THE FILLER OF NEUTRON ABSORBER MATERIAL TO BE DISCHARGED FROM SAID HOUSING THROUGH SAID LOWER END.
Claim 2
Dependent Claim
122 words
IN A NUCLEAR REACTOR INCLUDING A REACTOR CORE, A CONTROL ROD ASSEMBLY WHICH COMPRISES AN ELONGATED HOUSING ADAPTED TO BE VERTICALLY MOVED WITHIN AND RELATIVE TO THE CORE OF THE REACTOR, SAID HOUSING AHAVING A HOLLOW CENTRAL PORTION AND AN OPEN LOWER END COMMUNICATING THEREWITH, A FILLER OF NEUTRON ABSORBING MATERIAL DISPOSED WITHIN SAID HOLLOW CENTRAL PORTION, AND AN END PLUG CONNECTED TO THE LOWER OPEN END OF SAID HOUSING FOR RELEASABLY CONFINING THE FILLER WITHIN THE HOLLOW CENTRAL PORTION THEREOF, SAID END PLUG BEING AT LEAST PARTIALLY FABRICATED OF A FUSIBLE MATERIAL THAT MELTS WHEN THE CORE TEMPERATURE EXCEEDS A PRESELECTED MAXIMUM TEMPERATURE TO ALLOW THE FILLER OF NEUTRON ABSORBER MATERIAL TO BE DISCHARGED FROM SAID HOUSING THROUGH SAID LOWER END.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |