Patent US3117274A successfully refreshed from Google Patents.
US3117274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power supply with protective circuits
Assignee: International Business Machines Corp
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Filing: 1960-07-29
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Granted: 1964-01-07
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Expires: 1980-07-29
Abstract
No abstract record available.
Inventors
- 👤 Essinger Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:00
CPC Classifications
G; G05; G05F; G05F3/00; G05F3/02; G05F3/04; G05F3/06; G05F1/00; G05F1/10; G05F1/12; G05F1/32; G05F1/34; G05F1/38; H; H02; H02H; H02H9/00; H02H9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN COMBINATION, A FERRORESONANT TRANSFORMER HAVING A MAGNETIC CORE WITH ADJACENT PRIMARY AND SECONDARY PORTIONS WITH PRIMARY AND SECONDARY WINDINGS THEREON SEPARATED BY MAGNETIC SHUNT MEANS AND HAVING AN OPENING IN SAID SECONDARY PORTION, A RESONANT CIRCUIT INCLUDING A CAPACITOR AND A PORTION OF THE SECONDARY WINDING, A CONTROL WINDINGS PASSING THROUGH SAID OPENING FOR PRODUCING A LOCAL CONTROL FLUX ABOUT THE PERIPHERY OF THE OPENING, CIRCUIT MEANS CONNECTED TO EFFECT ENERGIZATION OF THE CONTROL WINDING IN ACCORDANCE WITH THE VOLTAGE OF THE SECONDARY WINDING TO REGULATE SAID VOLTAGE AND ADDITIONAL CIRCUIT MEANS CONNECTED IN CIRCUIT WITH THE SECONDARY WINDING AND THE CONTROL WINDING FOR EFFECTING ENERGIZATION OF THE CONTROL WINDING INDEPENDENTLY OF THE AFORESAID CIRCUIT MEANS TO SUBSTANTIALLY IMMEDIATELY DE-ENERGIZE THE SECOND-
Claim 2
Dependent Claim
123 words
IN COMBINATION, A FERRORESONANT TRANSFORMER HAVING A MAGNETIC CORE WITH ADJACENT PRIMARY AND SECONDARY PORTIONS WITH PRIMARY AND SECONDARY WINDINGS THEREON SEPARATED BY MAGNETIC SHUNT MEANS AND HAVING AN OPENING IN SAID SECONDARY PORTION, A RESONANT CIRCUIT INCLUDING A CAPACITOR AND A PORTION OF THE SECONDARY WINDING, A CONTROL WINDINGS PASSING THROUGH SAID OPENING FOR PRODUCING A LOCAL CONTROL FLUX ABOUT THE PERIPHERY OF THE OPENING, CIRCUIT MEANS CONNECTED TO EFFECT ENERGIZATION OF THE CONTROL WINDING IN ACCORDANCE WITH THE VOLTAGE OF THE SECONDARY WINDING TO REGULATE SAID VOLTAGE AND ADDITIONAL CIRCUIT MEANS CONNECTED IN CIRCUIT WITH THE SECONDARY WINDING AND THE CONTROL WINDING FOR EFFECTING ENERGIZATION OF THE CONTROL WINDING INDEPENDENTLY OF THE AFORESAID CIRCUIT MEANS TO SUBSTANTIALLY IMMEDIATELY DE-ENERGIZE THE SECOND-
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) | 1967-01-06 | 1967-07-08 | 1968-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-06 | 1971-07-08 | 1972-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-06 | 1975-07-08 | 1976-01-07 | $7700.00 | Window Closed / Lapsed |