US3414796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically controlled battery charge and discharge circuit
Assignee: International Standard Electric Corp
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Filing: 1966-11-23
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Granted: 1968-12-03
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Expires: 1986-11-23
Abstract
No abstract record available.
Inventors
- 👤 Henquet Andre Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:46
CPC Classifications
H; H01; H01H; H01H36/00; H01H36/0006; H01F; H01F38/00; H01F38/14; H02; H02J; H02J4/00; H02J4/20; H02J4/25; H02J7/00; H02J7/02; H04; H04M; H04M1/00; H04M1/02; H04M1/04; H04M1/06; H04M1/10; H04M1/21; H04M1/215
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
74 words
AN AUTOMATIC SWITCHING MEANS IN COMBINATION WITH A BATTERY OPERATED DEVICE AND A BATTERY RECHARGER CIRCUIT COMPRISING: A PRIMARY WINDING OF A TRANSFORMER ADAPTED TO BE CONNECTED TO A SOURCE OF POWER; A SECONDARY WINDING FOR SAID TRANSFORMER BEING MOVABLE INTO AND OUT OF FLUX LINKING RELATION WITH SAID PRIMARY WINDING; A RECHARGEABLE BATTERY CONNECTED TO SAID SECONDARY WINDING THROUGH SUITABLE RECTIFIER MEANS; A MAGNETICALLY CONTROLLABLE SWITCH CONNECTED TO SAID BATTERY FOR CONTROLLING CUR-
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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) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |