US3115453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emergency shutdown for nuclear reactors
Assignee: Individual
•
Filing: 1961-08-02
•
Granted: 1963-12-24
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Expires: 1981-08-02
Abstract
No abstract record available.
Inventors
- 👤 Paget John Arthur
- 👤 Stanley L Koutz
- 👤 Richard S Stone
- 👤 Hugh B Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:32
CPC Classifications
G; G21; G21C; G21C9/00; G21C9/02; G21C7/00; G21C7/06; G21C7/08; G21C7/20; G21C9/027; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
IN A NUCLEAR REACTOR INCLUDING A GENERALLY VERTICALLY EXTENDING PRESSURE VESSEL HAVING A CORE INCLUDING FISSIONABLE MATERIAL DISPOSED AT THE LOWER PORTION OF THE VESSEL, A GUIDE TUBE EXTENDING FROM THE BOTTOM OF SAID CORE TO A POSITION SPACED ABOVE THE FISSIONABLE MATERIAL, AN EMERGENCY CONTROL ROD DISPOSED WITHIN SAID TUBE AND COMPRISING A ROD HANGER, A NEUTRON ABSORBING MATERIAL ELEMENT COAXIALLY FIXED TO SAID ROD HANGER, A SUPPORT SLEEVE FIXED TO THE LOWER END OF SAID ROD HANGER AND INCLUDING A PLURALITY OF RADIALLY PROJECTIONG SPLINES THEREON, MEANS DEFINING GUIDE SLOTS IN THE INNER WALL OF SAID TUBE ADAPTED TO BE SLIDABLY ENGAGED BY SAID SPLINES AND THEREBY GUIDE THE CONTROL ROD DURING MOVEMENT AXIALLY OF SAID TUBE, AND MEANS CONNECTING SAID CONTROL ROD TO SAID TUBE TO RELEASABLY MAINTAIN THE CONTROL ROD IN POSITIN AT THE UPPER END OF THE TUBE AND ABOVE THE FISSIONABLE MATERIAL, SAID CONNECTING MEANS INCLUDING A TEMPERATURE RESPONSIVE SUBSTANCE ARRANGED AND ADAPTED TO HOLD THE CONTROL ROD IN ITS ELEVATED POSITION DURING ORDINARY OPERATION OF THE REACTOR BUT WHICH MATERIAL FUSES TO PERMIT THE CONTROL ROD TO MOVE DOWNWARDLY RELATIVE TO SAID TUBE AND TO A POSITION
Claim 2
Dependent Claim
194 words
IN A NUCLEAR REACTOR INCLUDING A GENERALLY VERTICALLY EXTENDING PRESSURE VESSEL HAVING A CORE INCLUDING FISSIONABLE MATERIAL DISPOSED AT THE LOWER PORTION OF THE VESSEL, A GUIDE TUBE EXTENDING FROM THE BOTTOM OF SAID CORE TO A POSITION SPACED ABOVE THE FISSIONABLE MATERIAL, AN EMERGENCY CONTROL ROD DISPOSED WITHIN SAID TUBE AND COMPRISING A ROD HANGER, A NEUTRON ABSORBING MATERIAL ELEMENT COAXIALLY FIXED TO SAID ROD HANGER, A SUPPORT SLEEVE FIXED TO THE LOWER END OF SAID ROD HANGER AND INCLUDING A PLURALITY OF RADIALLY PROJECTIONG SPLINES THEREON, MEANS DEFINING GUIDE SLOTS IN THE INNER WALL OF SAID TUBE ADAPTED TO BE SLIDABLY ENGAGED BY SAID SPLINES AND THEREBY GUIDE THE CONTROL ROD DURING MOVEMENT AXIALLY OF SAID TUBE, AND MEANS CONNECTING SAID CONTROL ROD TO SAID TUBE TO RELEASABLY MAINTAIN THE CONTROL ROD IN POSITIN AT THE UPPER END OF THE TUBE AND ABOVE THE FISSIONABLE MATERIAL, SAID CONNECTING MEANS INCLUDING A TEMPERATURE RESPONSIVE SUBSTANCE ARRANGED AND ADAPTED TO HOLD THE CONTROL ROD IN ITS ELEVATED POSITION DURING ORDINARY OPERATION OF THE REACTOR BUT WHICH MATERIAL FUSES TO PERMIT THE CONTROL ROD TO MOVE DOWNWARDLY RELATIVE TO SAID TUBE AND TO A POSITION
References Cited (Backward Citations)
US2735811A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |