US3159767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage sensing and overvoltage indicating circuit
Assignee: Lear Siegler Inc
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Filing: 1960-05-04
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Granted: 1964-12-01
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Expires: 1980-05-04
Abstract
No abstract record available.
Inventors
- 👤 Richard R Secunde
- 👤 Charles H Grace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:56
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A STATIC VOLTAGE SENSING AND OVERVOLTAGE INDICATING CIRCUIT FOR AN ALTERNATING CURRENT SYSTEM COMPRISING A SATURABLE CORE, SENSING MEANS RESPONSIVE TO THE VOLTAGE OF SUCCEEDING HALF CYCLES OF THE SAME POLARITY OF A PHASE OF SAID SYSTEM FOR CHANGING THE FLUX LEVEL OF SAID CORE IN ONE DIRECTION A FIRST AMOUNT PROPORTIONAL TO THE AVERAGE VOLTAGE OF SAID PHASE, RESETTING MEANS FOR CHANGING THE FLUX LEVEL OF SAID CORE IN AN OPPOSITE DIRECTION A SECOND PREDETERMINED AMOUNT SUBSTANTIALLY INDEPENDENT OF THE AVERAGE VOLTAGE OF SAID PHASE AND HAVING A PREDETERMINED RELATIONSHIP TO SAID FIRST AMOUNT THAT IS SUBSTANTIALLY INDEPENDENT OF THE FREQUENCY OF SYSTEM VOLTAGE, SAID SENSING MEANS ACTING ON SAID CORE ONCE DURING EACH CYCLE OF SYSTEM VOLTAGE, AND OUTPUT MEANS FOR PROVIDING A CHARACTERISTIC OUTPUT SIGNAL WHEN THE FLUX LEVEL OF SAID CORE IS DRIVEN TO SATURATION BY SAID SENSING MEANS.
Claim 2
Dependent Claim
143 words
A STATIC VOLTAGE SENSING AND OVERVOLTAGE INDICATING CIRCUIT FOR AN ALTERNATING CURRENT SYSTEM COMPRISING A SATURABLE CORE, SENSING MEANS RESPONSIVE TO THE VOLTAGE OF SUCCEEDING HALF CYCLES OF THE SAME POLARITY OF A PHASE OF SAID SYSTEM FOR CHANGING THE FLUX LEVEL OF SAID CORE IN ONE DIRECTION A FIRST AMOUNT PROPORTIONAL TO THE AVERAGE VOLTAGE OF SAID PHASE, RESETTING MEANS FOR CHANGING THE FLUX LEVEL OF SAID CORE IN AN OPPOSITE DIRECTION A SECOND PREDETERMINED AMOUNT SUBSTANTIALLY INDEPENDENT OF THE AVERAGE VOLTAGE OF SAID PHASE AND HAVING A PREDETERMINED RELATIONSHIP TO SAID FIRST AMOUNT THAT IS SUBSTANTIALLY INDEPENDENT OF THE FREQUENCY OF SYSTEM VOLTAGE, SAID SENSING MEANS ACTING ON SAID CORE ONCE DURING EACH CYCLE OF SYSTEM VOLTAGE, AND OUTPUT MEANS FOR PROVIDING A CHARACTERISTIC OUTPUT SIGNAL WHEN THE FLUX LEVEL OF SAID CORE IS DRIVEN TO SATURATION BY SAID SENSING MEANS.
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) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |