Patent US4344235A successfully refreshed from Google Patents.
Patent US3588651A successfully refreshed from Google Patents.
US3588651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid state electrical control for a reversibly movable member
Assignee: Individual
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Filing: 1969-03-18
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Granted: 1971-06-28
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Expires: 1989-03-18
Abstract
Abstract A SOLID-STATE CONTROL FOR AN OPERATING INSTRUMENTALITY HAVING A MEMBER MOVABLE THROUGH A SUCCESSION OF OPERATING RANGES, SUCH AS REVERSING IN EACH SUCCESSIVE RANGE, UTILIZING THE MOVABLE MEMBER FOR CONTROLLING BUILDUP OF INDUCTANCE FOR EFFECTING THE CHANGE FROM ONE RANGE TO THE NEXT OF THE MOVABLE MEMBER, THE BUILDUP OF INDUCTANCE IMPOSING A BIAS ON THE SOLID-STATE COMPONENTS, AND THEREBY CONTROLLING THE OPERATION OF THE MOVABLE MEMBER, THE APPARATUS ALSO INCLUDES MEANS FOR ADJUSTABLY CONTROLLING THE EXTENT OF BUILDUP FOR UNIT MOVEMENT OF THE MOVABLE MEMBER FOR THEREBY CONTROLLING THE EXTENT OF EACH RANGE.
Inventors
- 👤 Arthur K Littwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:17
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |