Patent US3087879A successfully refreshed from Google Patents.
US3087879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control rod
Assignee: Individual
•
Filing: 1961-02-06
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Granted: 1963-04-30
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Expires: 1981-02-06
Abstract
No abstract record available.
Inventors
- 👤 David E Walker
- 👤 Matras Steve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:21
CPC Classifications
G; G21; G21C; G21C7/00; G21C7/06; G21C7/08; G21C7/10; G21C3/00; G21C3/02; G21C3/04; G21C3/06; G21C3/10; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A CONTROL ROD FOR USE IN A NUCLEAR REACTOR COMPRISING A HOLLOW CYLINDRICAL TUBE, A NEUTRON ABSORBER WITHIN THE CYLINDRICAL TUBE, AND GAS-PERVIOUS, LIQUID-IMPERVIOUS PLURGS OF COMPACTED METAL WOOL AT BOTH ENDS OF SAID TUBE, SAID TUBE HAVING NEGATIVE TAPERS ADJACENT BOTH ENDS.
Claim 2
Dependent Claim
43 words
A CONTROL ROD FOR USE IN A NUCLEAR REACTOR COMPRISING A HOLLOW CYLINDRICAL TUBE, A NEUTRON ABSORBER WITHIN THE CYLINDRICAL TUBE, AND GAS-PERVIOUS, LIQUID-IMPERVIOUS PLURGS OF COMPACTED METAL WOOL AT BOTH ENDS OF SAID TUBE, SAID TUBE HAVING NEGATIVE TAPERS ADJACENT BOTH ENDS.
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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |