Patent US3014856A successfully refreshed from Google Patents.
US3014856A
Expired / Lapsed
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Locking device for reactor fuel elements containing an interlocking feature
Assignee: Allis Chalmers Corp
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Filing: 1957-10-22
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Granted: 1961-12-26
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Expires: 1977-10-22
Abstract
No abstract record available.
Inventors
- 👤 John H Nicklas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:30
CPC Classifications
G; G21; G21C; G21C19/00; G21C19/02; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S376/00; Y10S376/90; Y10S376/901; Y10S376/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
IN A NUCLEAR REACTOR HAVING A STATIONARY SHIELD STRUCTURE AND A PLUG OF SHIELDING MATERIAL REMOVABLY DISPOSED IN SAID SHIELD, A MECHANISM FOR AUTOMATICALLY PERFORMING A PLURALITY OF OPERATIONS IN A SEQUENTIAL MANNER IN ACCORDANCE WITH A PREDETERMINED SAFE PROCEDURE FOR REMOVING AND REPLACING SAID PLUG OF SHIELDING MATERIAL IN SAID STATIONARY SHIELD STRUCTURE COMPRISING A TOOL MEMBER TELESCOPICALLY ENGAGEABLE WITH SAID PLUG, LATCHING MEANS ASSOCIATED WITH SAID PLUG INCLUDING A LATCH MEMBER MOUNTED ON SAID PLUG FOR BACK AND FORTH MOVEMENT ALTERNATIVELY BETWEEN A PLUG LOCKING POSITION AND A TOOL LOCKING POSITION, SAID LATCH MEMBER AND SAID SHIELD STRUCTURE HAVING PORTIONS RESPECTIVELY COOPERATING WITH EACH OTHER WHEN SAID LATCH MEMBER IS DISPOSED IN SAID PLUG LOCKING POSITION TO PREVENT REMOVAL OF SAID PLUG FROM SAID SHIELD STRUCTURE, AND SAID LATCH MEMBER AND SAID TOOL MEMBER HAVING PORTIONS RESPECTIVELY COOPERATING WITH EACH OTHER IN LOAD TRANSMITTING RELATIONSHIP FOR REMOVAL OF SAID PLUG FROM SAID SHIELD STRUCTURE WHEN SAID LATCH MEMBER IS DISPOSED
Claim 2
Dependent Claim
162 words
IN A NUCLEAR REACTOR HAVING A STATIONARY SHIELD STRUCTURE AND A PLUG OF SHIELDING MATERIAL REMOVABLY DISPOSED IN SAID SHIELD, A MECHANISM FOR AUTOMATICALLY PERFORMING A PLURALITY OF OPERATIONS IN A SEQUENTIAL MANNER IN ACCORDANCE WITH A PREDETERMINED SAFE PROCEDURE FOR REMOVING AND REPLACING SAID PLUG OF SHIELDING MATERIAL IN SAID STATIONARY SHIELD STRUCTURE COMPRISING A TOOL MEMBER TELESCOPICALLY ENGAGEABLE WITH SAID PLUG, LATCHING MEANS ASSOCIATED WITH SAID PLUG INCLUDING A LATCH MEMBER MOUNTED ON SAID PLUG FOR BACK AND FORTH MOVEMENT ALTERNATIVELY BETWEEN A PLUG LOCKING POSITION AND A TOOL LOCKING POSITION, SAID LATCH MEMBER AND SAID SHIELD STRUCTURE HAVING PORTIONS RESPECTIVELY COOPERATING WITH EACH OTHER WHEN SAID LATCH MEMBER IS DISPOSED IN SAID PLUG LOCKING POSITION TO PREVENT REMOVAL OF SAID PLUG FROM SAID SHIELD STRUCTURE, AND SAID LATCH MEMBER AND SAID TOOL MEMBER HAVING PORTIONS RESPECTIVELY COOPERATING WITH EACH OTHER IN LOAD TRANSMITTING RELATIONSHIP FOR REMOVAL OF SAID PLUG FROM SAID SHIELD STRUCTURE WHEN SAID LATCH MEMBER IS DISPOSED
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) | 1964-12-25 | 1965-06-26 | 1965-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-25 | 1969-06-26 | 1969-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-25 | 1973-06-26 | 1973-12-26 | $7700.00 | Window Closed / Lapsed |