US3302064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage insensitive frequency monitoring system
Assignee: Ling Temco Vought Inc
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Filing: 1963-04-29
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Granted: 1967-01-31
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 William G Redmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:12
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
FOR MONITORING THE FREQUENCY OF AN A.C. POWER SOURCE, A SYSTEM COMPRISING: FREQUENCY-SENSITIVE MEANS CONNECTED TO THE A.C. POWER SOURCE AND PRODUCING A POSITIVE AND NEGATIVE PAIR OF D.C. VOLTAGE OUTPUTS PROPORTIONAL TO THE FREQUENCY OF THE POWER SOURCE; VOLTAGE-RESPONSIVE CURRENT-CONTROL MEANS HAVING A CONTROL ELECTRODE AND FIRST AND SECOND ELECTRODES BETWEEN WHICH ELECTRICAL CURRENT FLOWS WHEN THE CURRENT-CONTROL MEANS CONDUCTS, CURRENT FLOW BEING FROM THE FIRST TO THE SECOND ELECTRODE; CURRENT-RESPONSIVE MEANS; MEANS CONNECTING SAID CURRENT-RESPONSIVE MEANS TO SAID POWER SOURCE AND TO SAID FIRST ELECTRODE TO MAINTAIN AN E.M.F. BETWEEN THE FIRST AND SECOND ELECTRODE;
Claim 2
Dependent Claim
97 words
FOR MONITORING THE FREQUENCY OF AN A.C. POWER SOURCE, A SYSTEM COMPRISING: FREQUENCY-SENSITIVE MEANS CONNECTED TO THE A.C. POWER SOURCE AND PRODUCING A POSITIVE AND NEGATIVE PAIR OF D.C. VOLTAGE OUTPUTS PROPORTIONAL TO THE FREQUENCY OF THE POWER SOURCE; VOLTAGE-RESPONSIVE CURRENT-CONTROL MEANS HAVING A CONTROL ELECTRODE AND FIRST AND SECOND ELECTRODES BETWEEN WHICH ELECTRICAL CURRENT FLOWS WHEN THE CURRENT-CONTROL MEANS CONDUCTS, CURRENT FLOW BEING FROM THE FIRST TO THE SECOND ELECTRODE; CURRENT-RESPONSIVE MEANS; MEANS CONNECTING SAID CURRENT-RESPONSIVE MEANS TO SAID POWER SOURCE AND TO SAID FIRST ELECTRODE TO MAINTAIN AN E.M.F. BETWEEN THE FIRST AND SECOND ELECTRODE;
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |