US3333178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic control apparatus
Assignee: Magnetics Inc
•
Filing: 1958-12-11
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Granted: 1967-07-25
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Expires: 1978-12-11
Abstract
No abstract record available.
Inventors
- 👤 Roland L Van Allen
- 👤 Charles E Hardies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:10
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/40; G05F1/44; G05F1/445; H; H02; H02M; H02M5/00; H02M5/02; H02M5/04; H02M5/22; H02M5/25; H02M5/257; H02M5/2573
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
158 words
ELECTRICAL APPARATUS INCLUDING A TRANSFORMER HAVING A SECONDARY WINDING AND A PRIMARY WINDING ADAPTED TO BE CONNECTED TO AN ALTERNATING CURRENT POWER SOURCE; A PAIR OF SOLID STATE DEVICE POSSESSING THYRATON CHARACTERISTICS AND HAVING AN ANODE TERMINAL, A CATHODE TERMINAL AND A CONTROL TERMINAL; THE ANODE T ERMINALS OF THE SOLID STATE DEVICES BEING CONNECTED TO OPPOSITE ENDS OF THE SECONDARY WINDING AND THE CATHODE TO OPPOSITE BEING CONNECTED TOGETHER AND TO A MEDIAL POINT OF THE SECONDARY WINDING THROUGH A LOAD IMPEDANCE; A FIRST CORE HAVING A SUBSTANTIALLY RECTANGULAR HYSTERESIS CHARACTERISTIC AND A FIRST WINDING ASSOCIATED WITH THE FIRST CORE; A SECOND CORE HAVING A SUBSTANTIALLY RECTANGULAR HYSTERESIS CHARACTERISTIC AND A SECOND WINDING ASSOCIATED WITH THE SECOND CORE; ONE END OF THE FIRST WINDING BEING CONNECTED THROUGH A FIRST RECTIFIER TO THE ANODE TERMINAL OF ONE OF THE SOLID STATE DEVICES AND THE OTHER END OF THE FIRST WINDING BEING CONNECTED THROUGH FIRST RESISTANCE MEANS TO THE
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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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |