Patent US3255092A successfully refreshed from Google Patents.
US3255092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control rods
Assignee: General Dynamics Corp
•
Filing: 1961-03-24
•
Granted: 1966-06-07
•
Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
- 👤 Jr John B Dee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:18
CPC Classifications
G; G21; G21C; G21C7/00; G21C7/06; G21C7/08; G21C7/10; G21C7/02; G21C7/04; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
AN ELONGATED CONTROL ROD FOR A NUCLEAR REACTOR, WHICH CONTROL ROD COMPRISES A PLURALITY OF NEUTRON-ABSORBING PORTIONS OF PREDETERMINED GEOMETRIC SHAPES ARRANGED TRANSVERSELY ACROSS THE CONTROL ROD, EACH OF SAID PORTIONS CONTAINING A PREDETERMINED CONCENTRATION OF BURNABLE POISON, THE CONCENTRATION OF BURNABLE POISON IN SAID PORTIONS VARYING BETWEEN PORTIONS, SAID VARYING CONCENTRATIONS BEING SO PRESELECTED THAT THE EFFECTIVE NEUTRON-
Claim 2
Dependent Claim
59 words
AN ELONGATED CONTROL ROD FOR A NUCLEAR REACTOR, WHICH CONTROL ROD COMPRISES A PLURALITY OF NEUTRON-ABSORBING PORTIONS OF PREDETERMINED GEOMETRIC SHAPES ARRANGED TRANSVERSELY ACROSS THE CONTROL ROD, EACH OF SAID PORTIONS CONTAINING A PREDETERMINED CONCENTRATION OF BURNABLE POISON, THE CONCENTRATION OF BURNABLE POISON IN SAID PORTIONS VARYING BETWEEN PORTIONS, SAID VARYING CONCENTRATIONS BEING SO PRESELECTED THAT THE EFFECTIVE NEUTRON-
References Cited (Backward Citations)
US3103479A
Cited
US2866741A
Cited
GB835257A
Cited
US2859163A
Cited
US3088898A
Cited
FR1239165A
Cited
GB926133A
Cited
US3030294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |