Control rod antiejection latch
Abstract
Abstract A NUCLEAR REACTOR CONTROL ROD ANTEJECTION LATCH FOR USE WITH MAGNETIC JACKING TYPE CONTROL ROD DRIVES AND HAVING A PAWL WHICH RATCHETS TO ALLOW INSERTION OF THE CONTROL ROD, BUT WHICH RATCHETS TO ALLOW INSERTION OF THE CONTROL ROD, COIL IS ENERGIZED. A PIVOTALLY MOUNTED LOOKING PAWL NORMALLY ENGAGES THE CONTROL ROD AND IS POSITIVELY DISENGAGED WHEN AN UNLOCKING SLUG IS DRAWN DOWN BY THE LIFTING COIL. A CONNECTING LINK IS PIVOTALLY ATTACHED TO BOTH THE PAWL AND A LINK ON THE SLUG. THE CONNECTING LINK HAS A SPRING FORCE EXERTED UPWARDLY ON IT. THE LOCATION OF THE PIVOTED CONNECTIONS AND THE SPRING FORCE IS SUCH THAT RATCHETING OF THE PAWL OCCURS WITHOUT DISPLACEMENT OF THE SLUG AND AGAINST A LESSER SPRING FORCE THAN IS ACTING ON THE SLUG.
Inventors
- 👤 Harold V Lichtenberger
- 👤 Louis A Bertone
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |