US3305754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charging apparatus for multicell batteries
Assignee: Frederick Res Corp
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Filing: 1963-06-04
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Granted: 1967-02-21
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Expires: 1983-06-04
Abstract
No abstract record available.
Inventors
- 👤 Richard W Oaks
- 👤 Palmer K Weir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:40
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/50; H02J7/52; H02J7/56; Y; Y10; Y10S; Y10S320/00; Y10S320/18; Y10S320/19; Y10S320/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A CHARGING CIRCUIT FOR A MULTICELL BATTERY COMPRISING CURRENT REGULATING CIRCUITS CONNECTING THE CELLS OF THE MULTICELL BATTERY TO A SOURCE OF CHARGING CURRENT, MONITORING MEANS FOR INDICATING THE ABSENCE OF A FULL CHARGE OF A CELL AND FURTHER FOR INDICATING A FULL CHARGE CONDITION OF A CELL, A STEPPING SWITCH SEQUENTIALLY CONNECTING SAID CELLS TO SAID MONITORING MEANS, MEANS RESPONSIVE TO SAID ABSENCE INDICATING MEANS FOR MAINTAINING SAID CURRENT REGULATING CIRCUITS CONDUCTIVE AND SAID SOURCE OF CHARGING CURRENT THUS LOCKED IN WITH THEIR RESPECTIVE CELLS UNTIL A FULL CHARGE IS ACQUIRED BY A CELL, AND MEANS FOR PERIODICALLY OPERATING SAID STEPPING SWITCH.
Claim 2
Dependent Claim
103 words
A CHARGING CIRCUIT FOR A MULTICELL BATTERY COMPRISING CURRENT REGULATING CIRCUITS CONNECTING THE CELLS OF THE MULTICELL BATTERY TO A SOURCE OF CHARGING CURRENT, MONITORING MEANS FOR INDICATING THE ABSENCE OF A FULL CHARGE OF A CELL AND FURTHER FOR INDICATING A FULL CHARGE CONDITION OF A CELL, A STEPPING SWITCH SEQUENTIALLY CONNECTING SAID CELLS TO SAID MONITORING MEANS, MEANS RESPONSIVE TO SAID ABSENCE INDICATING MEANS FOR MAINTAINING SAID CURRENT REGULATING CIRCUITS CONDUCTIVE AND SAID SOURCE OF CHARGING CURRENT THUS LOCKED IN WITH THEIR RESPECTIVE CELLS UNTIL A FULL CHARGE IS ACQUIRED BY A CELL, AND MEANS FOR PERIODICALLY OPERATING SAID STEPPING SWITCH.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |