US3119067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase shift compensator
Assignee: Individual
•
Filing: 1961-10-02
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Granted: 1964-01-21
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Expires: 1981-10-02
Abstract
No abstract record available.
Inventors
- 👤 William E Wohlenberg
- 👤 August W Rihaczek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:56
CPC Classifications
H; H03; H03H; H03H11/00; H03H11/02; H03H11/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A PHASE SHIFT COMPENSATING SYSTEM FOR NARROWBAND HIGHLY SELECTIVE CIRCUITS COMPRISING A SOURCE FOR PROVIDING AN INPUT FREQUENCY, A SECOND SOURCE FOR PROVIDING A REFERENCE FREQUENCY, MEANS COMBINING SAID FREQUENCIES TO PROVIDE A FIRST SIGNAL OUTPUT FROM SAID MEANS HAVING A FREQUENCY CHANGE IN ONE DIRECTION AND A SECOND SIGNAL OUTPUT FROM SAID MEANS HAVING A FREQUENCY CHANGE IN A SECOND DIRECTION, A PAIR OF FILTERS CONNECTED TO SAID COMBINING MEANS, ONE OF SAID FILTERS RESPONSIVE TO THE FREQUENCY CHANGE IN SAID ONE DIRECTION TO PROVIDE AN OUTPUT SIGNAL FROM SAID ONE FILTER HAVING A PHASE SHIFT IN ONE DIRECTION, THE OTHER OF SAID FILTERS RESPONSIVE TO SAID FREQUENCY CHANGE IN SAID SECOND DIRECTION TO PROVIDE AN OUTPUT SIGNAL FROM SAID OTHER FILTER HAVING A PHASE SHIFT IN A SECOND DIRECTION, AND SECOND MEANS COMBINING SAID PHASE SHIFTED SIGNALS TO PROVIDE AN OUTPUT SIGNAL FROM SAID SECOND MEANS HAVING A NEGLIGIBLE VARIATION OF THE PHASE SHIFT WITH CHANGE IN FREQUENCY.
Claim 2
Dependent Claim
160 words
A PHASE SHIFT COMPENSATING SYSTEM FOR NARROWBAND HIGHLY SELECTIVE CIRCUITS COMPRISING A SOURCE FOR PROVIDING AN INPUT FREQUENCY, A SECOND SOURCE FOR PROVIDING A REFERENCE FREQUENCY, MEANS COMBINING SAID FREQUENCIES TO PROVIDE A FIRST SIGNAL OUTPUT FROM SAID MEANS HAVING A FREQUENCY CHANGE IN ONE DIRECTION AND A SECOND SIGNAL OUTPUT FROM SAID MEANS HAVING A FREQUENCY CHANGE IN A SECOND DIRECTION, A PAIR OF FILTERS CONNECTED TO SAID COMBINING MEANS, ONE OF SAID FILTERS RESPONSIVE TO THE FREQUENCY CHANGE IN SAID ONE DIRECTION TO PROVIDE AN OUTPUT SIGNAL FROM SAID ONE FILTER HAVING A PHASE SHIFT IN ONE DIRECTION, THE OTHER OF SAID FILTERS RESPONSIVE TO SAID FREQUENCY CHANGE IN SAID SECOND DIRECTION TO PROVIDE AN OUTPUT SIGNAL FROM SAID OTHER FILTER HAVING A PHASE SHIFT IN A SECOND DIRECTION, AND SECOND MEANS COMBINING SAID PHASE SHIFTED SIGNALS TO PROVIDE AN OUTPUT SIGNAL FROM SAID SECOND MEANS HAVING A NEGLIGIBLE VARIATION OF THE PHASE SHIFT WITH CHANGE IN FREQUENCY.
References Cited (Backward Citations)
US3019296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-20 | 1967-07-22 | 1968-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-20 | 1971-07-22 | 1972-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-20 | 1975-07-22 | 1976-01-21 | $7700.00 | Window Closed / Lapsed |