US3170844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control rod drive mechanism
Assignee: Individual
•
Filing: 1960-09-19
•
Granted: 1965-02-23
•
Expires: 1980-09-19
Abstract
No abstract record available.
Inventors
- 👤 Nicoll David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:34
CPC Classifications
G; G21; G21C; G21C7/00; G21C7/06; G21C7/08; G21C7/12; G21C7/16; G21C7/14; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
IN A DRIVE MECHANISM FOR INSERTING AND RETRACTING A CONTROL ROD WITH RESPECT TO THE CORE OF A NUCLEAR REACTOR WHICH REACTOR IS OF THE CLASS ENCLOSED IN A PRESSURE VESSEL AND EMPLOYING A FLUID COOLANT, THE COMBINATION COMPRISING A REVERSIBLE ELECTRICAL MOTOR, A CLUTCH RELEASABLY COUPLING SAID ELECTRICAL MOTOR TO SAID CONTROL ROD TO MOVE SAID ROD AXIALLY, A FLUID DRIVEN CYLINDER HAVING A FIRST END COMMUNICATED WITH SAID VESSEL AND HAVING A FLUID INLET AT A SECOND END, MEANS COUPLING SAID CYLINDER TO SAID CONTROL ROD TO DRIVE SAID ROD AXIALLY INTO SAID CORE UPON OPERATION OF SAID CYLINDER, A COMPRESSOR RECEIVING COOLANT FROM SAID REACTOR AND COMPRESSING SAID COOLANT TO A PRESSURE HIGHER THAN THAT WITHIN SAID VESSEL, AND A VALVE FOR SELECTIVELY TRANSMITTING SAID HIGH PRESSURE FLUID FROM SAID COMPRESSOR TO SAID INLET AT SAID SECOND END OF SAID CYLINDER.
Claim 2
Dependent Claim
144 words
IN A DRIVE MECHANISM FOR INSERTING AND RETRACTING A CONTROL ROD WITH RESPECT TO THE CORE OF A NUCLEAR REACTOR WHICH REACTOR IS OF THE CLASS ENCLOSED IN A PRESSURE VESSEL AND EMPLOYING A FLUID COOLANT, THE COMBINATION COMPRISING A REVERSIBLE ELECTRICAL MOTOR, A CLUTCH RELEASABLY COUPLING SAID ELECTRICAL MOTOR TO SAID CONTROL ROD TO MOVE SAID ROD AXIALLY, A FLUID DRIVEN CYLINDER HAVING A FIRST END COMMUNICATED WITH SAID VESSEL AND HAVING A FLUID INLET AT A SECOND END, MEANS COUPLING SAID CYLINDER TO SAID CONTROL ROD TO DRIVE SAID ROD AXIALLY INTO SAID CORE UPON OPERATION OF SAID CYLINDER, A COMPRESSOR RECEIVING COOLANT FROM SAID REACTOR AND COMPRESSING SAID COOLANT TO A PRESSURE HIGHER THAN THAT WITHIN SAID VESSEL, AND A VALVE FOR SELECTIVELY TRANSMITTING SAID HIGH PRESSURE FLUID FROM SAID COMPRESSOR TO SAID INLET AT SAID SECOND END OF SAID CYLINDER.
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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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |