US3360738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for converting an exponentially decaying dc voltage into an exponentially decaying sinusoidal voltage
Assignee: Texas Instruments Inc
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Filing: 1964-07-31
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Granted: 1967-12-26
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Expires: 1984-07-31
Abstract
No abstract record available.
Inventors
- 👤 Ralph A Harris
- 👤 Freddy R Tischler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:39
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/24; G01V1/245
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
117 words
A SYSTEM FOR PRODUCING AN AC VOLTAGE, THE AMPLITUDE OF WHICH VARIES AT A PREDETERMINED RATE, COMPRISING A SOURCE OF DC VOLTAGE HAVING A PREDETERMINED MAGNITUDE, MEANS FOR VARYING A DC VOLTAGE FROM SAID SOURCE AT SAID PREDETERMINED RATE, MEANS FOR INVERTING THE DC VOLTAGE AS IT VARIES TO PRODUCE AN AC VOLTAGE HAVING AN AMPLITUDE CORRESPONDING TO THE VARYING MAGNITUDE OF THE DC VOLTAGE, AND SUMMATION NETWORK MEANS FOR SUMMING A SECOND AC VOLTAGE AND THE AC VOLTAGE PRODUCED BY INVERSION OF THE DC VOLTAGE, THE SECOND AC VOLTAGE BEING OF THE SAME FREQUENCY AND IN PHASE WITH SAID AC VOLTAGE WHEREBY THE FINAL AMPLITUDE OF THE TOTAL AC VOLTAGE IS MAINTAINED AT A PREDETERMINED VALUE.
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) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |