Patent US3134076A successfully refreshed from Google Patents.
US3134076A
Expired / Lapsed
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Frequency control system
Assignee: Avtron Manufacturing Inc
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Filing: 1961-11-21
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Granted: 1964-05-19
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Expires: 1981-11-21
Abstract
No abstract record available.
Inventors
- 👤 Haner Lambert
- 👤 Herbert R Ryerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:48
CPC Classifications
H; H02; H02P; H02P23/00; H02P23/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A FREQUENCY DIFFERENCE DETECTOR COMPRISING A FIRST GATE CIRCUIT HAVING AN OUTPUT ONLY WHEN A REFERENCE FREQUENCY SIGNAL OCCURS AT A PREDETERMINED TIME INTERVAL DURING THE CYCLE OF AN ALTERNATING CURRENT WAVE, A SECOND GATE CIRCUIT HAVING AN OUTPUT ONLY WHEN THE REFERENCE FREQUENCY SIGNAL NEXT OCCURS AT A TIME DURING SAID CYCLE LAGGING SAID PREDETERMINED TIME INTERVAL, A THIRD GATE CIRCUIT HAVING AN OUTPUT ONLY WHEN THE REFERENCE FREQUENCY SIGNAL NEXT OCCURS AT A TIME DURING SAID CYCLE LEADING SAID PREDETERMINED TIME INTERVAL, A PAIR OF BISTABLE CIRCUITS AND INTERCONNECTIONS WITH SAID GATE CIRCUITS WHEREBY THE FIRST BISTABLE CIRCUIT CYCLES WHEN THE SECOND GATE CIRCUIT HAS AN OUTPUT AND THE SECOND BISTABLE CIRCUIT CYCLES WHEN THE THIRD GATE CIRCUIT HAS AN OUTPUT.
Claim 2
Dependent Claim
123 words
A FREQUENCY DIFFERENCE DETECTOR COMPRISING A FIRST GATE CIRCUIT HAVING AN OUTPUT ONLY WHEN A REFERENCE FREQUENCY SIGNAL OCCURS AT A PREDETERMINED TIME INTERVAL DURING THE CYCLE OF AN ALTERNATING CURRENT WAVE, A SECOND GATE CIRCUIT HAVING AN OUTPUT ONLY WHEN THE REFERENCE FREQUENCY SIGNAL NEXT OCCURS AT A TIME DURING SAID CYCLE LAGGING SAID PREDETERMINED TIME INTERVAL, A THIRD GATE CIRCUIT HAVING AN OUTPUT ONLY WHEN THE REFERENCE FREQUENCY SIGNAL NEXT OCCURS AT A TIME DURING SAID CYCLE LEADING SAID PREDETERMINED TIME INTERVAL, A PAIR OF BISTABLE CIRCUITS AND INTERCONNECTIONS WITH SAID GATE CIRCUITS WHEREBY THE FIRST BISTABLE CIRCUIT CYCLES WHEN THE SECOND GATE CIRCUIT HAS AN OUTPUT AND THE SECOND BISTABLE CIRCUIT CYCLES WHEN THE THIRD GATE CIRCUIT HAS AN OUTPUT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |