Patent US3237082A successfully refreshed from Google Patents.
US3237082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alternating current regulator
Assignee: Bulova Watch Co Inc
•
Filing: 1961-12-18
•
Granted: 1966-02-22
•
Expires: 1981-12-18
Abstract
No abstract record available.
Inventors
- 👤 Heller Oscar
- 👤 Felcheck Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:22
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/145; H02M3/155; H02M3/156; H02M3/1563; H10; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
A SYSTEM FOR REGULATING AN ALTERNATING INPUT VOLTAGE COMPRISING MEANS TO CONVERT THE INPUT VOLTAGE TO A DIRECT-INPUT VOLTAGE, AN ELECTRONIC REGULATOR CONSTITUTED BY A TRANSISTOR HAVING A CONTROL ELEMENT, AN ELECTRONIC CHOPPER INCLUDING A TRANSISTOR HAVING A CONTROL ELEMENT, MEANS TO APPLY AN ALTERNATING VOLTAGE DERIVED FROM SAID INPUT VOLTAGE TO THE CONTROL ELEMENT OF SAID CHOPPER TRANSISTOR TO RENDER SAME PERIODICALLY CONDUCTIVE, MEANS TO APPLY SAID DIRECT-INPUT VOLTAGE THROUGH SAID REGULATOR TRANSISTOR TO SAID CHOPPER TRANSISTOR TO PRODUCE A SQUARE WAVE, MEANS COUPLED TO THE OUTPUT OF SAID CHOPPER TRANSISTOR TO TRANSFORM SAID SQUARE WAVE INTO A SINUSOIDAL OUTPUT VOLTAGE, MEANS TO DERIVE FROM SAID OUTPUT VOLTAGE A DIRECT TEST VOLTAGE WHOSE MAGNITUDE VARIES AS A FUNCTION OF AMPLITUDE VARIATIONS IN SAID OUTPUT VOLTAGE, A DIRECT REFERENCE VOLTAGE SOURCE, MEANS RESPONSIVE TO THE DIFFERENCE BETWEEN SAID TEST VOLTAGE AND SAID REFERENCE VOLTAGE TO PRODUCE A CONTROL VOLTAGE, AND MEANS TO APPLY SAID CONTROL VOLTAGE TO SAID CONTROL ELEMENT OF THE REGULATOR TRANSISTOR TO VARY THE RESISTANCE THEREOF AND THEREBY REGULATE SAID OUTPUT VOLTAGE.
Claim 2
Independent Claim
175 words
A SYSTEM FOR REGULATING AN ALTERNATING INPUT VOLTAGE COMPRISING MEANS TO CONVERT THE INPUT VOLTAGE TO A DIRECT-INPUT VOLTAGE, AN ELECTRONIC REGULATOR CONSTITUTED BY A TRANSISTOR HAVING A CONTROL ELEMENT, AN ELECTRONIC CHOPPER INCLUDING A TRANSISTOR HAVING A CONTROL ELEMENT, MEANS TO APPLY AN ALTERNATING VOLTAGE DERIVED FROM SAID INPUT VOLTAGE TO THE CONTROL ELEMENT OF SAID CHOPPER TRANSISTOR TO RENDER SAME PERIODICALLY CONDUCTIVE, MEANS TO APPLY SAID DIRECT-INPUT VOLTAGE THROUGH SAID REGULATOR TRANSISTOR TO SAID CHOPPER TRANSISTOR TO PRODUCE A SQUARE WAVE, MEANS COUPLED TO THE OUTPUT OF SAID CHOPPER TRANSISTOR TO TRANSFORM SAID SQUARE WAVE INTO A SINUSOIDAL OUTPUT VOLTAGE, MEANS TO DERIVE FROM SAID OUTPUT VOLTAGE A DIRECT TEST VOLTAGE WHOSE MAGNITUDE VARIES AS A FUNCTION OF AMPLITUDE VARIATIONS IN SAID OUTPUT VOLTAGE, A DIRECT REFERENCE VOLTAGE SOURCE, MEANS RESPONSIVE TO THE DIFFERENCE BETWEEN SAID TEST VOLTAGE AND SAID REFERENCE VOLTAGE TO PRODUCE A CONTROL VOLTAGE, AND MEANS TO APPLY SAID CONTROL VOLTAGE TO SAID CONTROL ELEMENT OF THE REGULATOR TRANSISTOR TO VARY THE RESISTANCE THEREOF AND THEREBY REGULATE SAID OUTPUT VOLTAGE.
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |