Patent US2962933A successfully refreshed from Google Patents.
Patent US3035995A successfully refreshed from Google Patents.
US3035995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic reactor safety control device
Assignee: North American Aviation Corp
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Filing: 1958-08-11
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Granted: 1962-05-22
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Expires: 1978-08-11
Abstract
No abstract record available.
Inventors
- 👤 Bernard G Seeley
- 👤 Charles C Weeks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:50
CPC Classifications
G; G21; G21C; G21C7/00; G21C7/36; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A FAIL-SAFE CONTROL APPARATUS COMPRISING AN ELECTRONIC VALVE HAVING A PAIR OF OUTPUT ELECTRODES AND AT LEAST ONE BIASING ELECTRODE, A SOURCE OF OPERATING POTENTIAL COUPLED TO SAID OUTPUT ELECTRODES TO ESTABLISH AN OPERATING POTENTIAL ACROSS SAID OUTPUT ELECTRODES, BIAS MEANS CONNECTED TO ONE OF SAID BIASING ELECTRODES FOR NORMALLY LIMITING CONDUCTION OF SAID VALVE, AN ACTUATOR CONNECTED TO ONE OF SAID OUTPUT ELECTRODES AND OPERATIVE IN RESPONSE TO CONDUCTION OF SAID VALVE IN A PREDETERMINED AMOUNT, CONDITION RESPONSIVE MEANS CONNECTED TO ONE OF SAID BIASING ELECRODES FOR INCREASING CONDUCTION OF SAID VALVE, AND MEANS CONNECTED TO EACH OF SAID OUTPUT ELECTRODES RESPONSIVE TO FAILURE OF SAID SOURCE FOR INCREASING CONDUCTION OF SAID VALVE TO SAID PREDETERMINED AMOUNT, WHEREBY SAID ACTUATOR WILL BE OPERATED UPON FAILURE OF SAID SOURCE.
Claim 2
Dependent Claim
129 words
A FAIL-SAFE CONTROL APPARATUS COMPRISING AN ELECTRONIC VALVE HAVING A PAIR OF OUTPUT ELECTRODES AND AT LEAST ONE BIASING ELECTRODE, A SOURCE OF OPERATING POTENTIAL COUPLED TO SAID OUTPUT ELECTRODES TO ESTABLISH AN OPERATING POTENTIAL ACROSS SAID OUTPUT ELECTRODES, BIAS MEANS CONNECTED TO ONE OF SAID BIASING ELECTRODES FOR NORMALLY LIMITING CONDUCTION OF SAID VALVE, AN ACTUATOR CONNECTED TO ONE OF SAID OUTPUT ELECTRODES AND OPERATIVE IN RESPONSE TO CONDUCTION OF SAID VALVE IN A PREDETERMINED AMOUNT, CONDITION RESPONSIVE MEANS CONNECTED TO ONE OF SAID BIASING ELECRODES FOR INCREASING CONDUCTION OF SAID VALVE, AND MEANS CONNECTED TO EACH OF SAID OUTPUT ELECTRODES RESPONSIVE TO FAILURE OF SAID SOURCE FOR INCREASING CONDUCTION OF SAID VALVE TO SAID PREDETERMINED AMOUNT, WHEREBY SAID ACTUATOR WILL BE OPERATED UPON FAILURE OF SAID SOURCE.
References Cited (Backward Citations)
US2735811A
Cited
US2931763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |