US3148326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferroresonant transformer with saturating control winding
Assignee: International Business Machines Corp
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Filing: 1959-12-24
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Granted: 1964-09-08
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Expires: 1979-12-24
Abstract
No abstract record available.
Inventors
- 👤 Orestes M Baycura
- 👤 Donald F Busch
- 👤 Essinger Pierre
- 👤 John F O'donnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:16
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/13; G05F3/00; G05F3/02; G05F3/04; G05F3/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
103 words
IN A TRANSFORMER, A CLOSED CORE OF A MAGNETIC MATERIAL HAVING PRIMARY DRIVE AND SECONDARY WINDINGS ON DIFFERENT PORTIONS THEREOF, A CAPACITOR CONNECTED IN CIRCUIT WITH A PORTION OF THE SECONDARY WINDING FOR INCREASING THE FLUX TO EFFECT SATURATION IN THE SECONDARY PORTION, MAGNECTIC SHUNT MEANS SEPARATING THE PRIMARY AND SECONDARY PORTIONS AND COMPRISING A PORTION OF THE MAGNETIC CIRCUIT FOR THE SECONDARY WINDING, AND A FIGURE 8 WINDING THREADED THROUGH AN OPENING IN PORTION OF THE SEOCONDARY MAGNETIC CIRCUIT FOR SATURATING A VARIABLE PORTION OF THE CROSS-SECTION OF SAID PORTION AND REDUCING THE CHANGE IN FLUX FOR THE SAME CHANGE IN DRIVE.
References Cited (Backward Citations)
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US2800625A
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US3013202A
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US2896180A
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US2844804A
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US3012187A
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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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |