Patent US3205448A successfully refreshed from Google Patents.
US3205448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency to voltage converter
Assignee: VIDAR CORP
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Filing: 1958-12-03
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Granted: 1965-09-07
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Expires: 1978-12-03
Abstract
No abstract record available.
Inventors
- 👤 George S Bahrs
- 👤 Dalton W Martin
- 👤 Malcoim M Mcwhorter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:36
CPC Classifications
G; G01; G01R; G01R23/00; G01R23/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
A FREQUENCY TO VOLTAGE CONVERTER COMPRISING MEANS FOR SWINGING A TERMINAL BETWEEN FIXED VOLTGE LIMITS AT A RATE PROPORTIONAL TO THE FREQUENCY OF AN INPUT SIGNAL, A CAPACITOR HAVING ONE TERMINAL CONNECTED TO SAID TERMINAL, FIRST AND SECOND CURRENT PATHS EACH INCLUDING A DIODE CONNECTED TO THE OTHER TERMINAL OF SAID CAPACITOR, SAID DIODES BEING ARRANGED TO CONDUCT CURRENT OF OPPOSITE POLARITY FROM SAID TERMINAL, MEANS CONNECTED IN ONE OF SAID CURRENT PATHS FOR DERIVING AN OUTPUT SIGNAL VOLTAGE PROPORTIONAL TO THE CURRENT FLOWING IN THE SAME, MEANS CONNECTED TO THE OTHER OF SAID CURRENT PATHS AND SERVING TO APPLY A VOLTAE THERETO WHICH IS PROPORTIONAL TO AND SUBSTANTIALLY IN PHASE WITH THE OUTPUT VOLTAGE.
References Cited (Backward Citations)
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Cited
US2560378A
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US2750500A
Cited
US2703382A
Cited
US2828417A
Cited
US2851599A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |