Patent US3258670A successfully refreshed from Google Patents.
US3258670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charging and discharging the same
Assignee: —
•
Filing: —
•
Granted: 1966-06-28
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Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:57
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/36; G01R31/3644; G01R31/3646
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
A CIRCUIT ARRANGEMENT FOR CHARGING AND DISCHARGING A BATTERY HAVING PILOT CELLS COMPRISING A BATTERY OF N1 CELLS OF LIKE CAPACITY CONNECTED IN SERIES, A NORMAL USE CELL AND A RESERVE CELL EACH OF LOWER DIFFERENT CAPACITY THAN THE CELLS OF THE BATTERY, LIKE POLES OF SAID NORMAL USE CELL AND SAID RESERVE CELL BEING CONNECTED TO A POLE OF OPPOSITE POLARITY OF SAID BATTERY, THE OTHER TWO POLES OF SAID NORMAL USE CELL AND SAID RESERVE CELL BEING CONNECTED TO SEPARATE TERMINALS BETWEEN WHICH A DIFFERENCE OF POTENTIAL MAY EXIST, A LOAD CIRCUIT, SELECTING MEANS SENSITIVE TO DIRECTION OF CURRENT FLOW THERETHROUGH FOR CONNECTING THE LOAD CIRCUIT TO SAID OTHER POLE OF THE RESERVE CELL DURING PERIODS OF CHARGE AND FOR CONNECTING SAID OTHER POLE OF SAID NORMAL USE CELL TO THE LOAD CIRCUIT DURING PERIODS OF DISCHARGE, MEANS FOR DETECTING A DIFFERENCE OF POTENTIAL BETWEEN SAID OTHER POLES OF SAID NORMAL USE CELL AND SAID RESERVE CELL AND A RELAY CONNECTED TO SAID DETECTING MEANS TO CONNECT SAID RESERVE CELL AND SAID NORMAL USE CELL IN PARALLEL WHEN SAID DIFFERENCE OF POTENTIAL ACHIEVES A SELECTED VALUE.
Claim 2
Dependent Claim
188 words
A CIRCUIT ARRANGEMENT FOR CHARGING AND DISCHARGING A BATTERY HAVING PILOT CELLS COMPRISING A BATTERY OF N1 CELLS OF LIKE CAPACITY CONNECTED IN SERIES, A NORMAL USE CELL AND A RESERVE CELL EACH OF LOWER DIFFERENT CAPACITY THAN THE CELLS OF THE BATTERY, LIKE POLES OF SAID NORMAL USE CELL AND SAID RESERVE CELL BEING CONNECTED TO A POLE OF OPPOSITE POLARITY OF SAID BATTERY, THE OTHER TWO POLES OF SAID NORMAL USE CELL AND SAID RESERVE CELL BEING CONNECTED TO SEPARATE TERMINALS BETWEEN WHICH A DIFFERENCE OF POTENTIAL MAY EXIST, A LOAD CIRCUIT, SELECTING MEANS SENSITIVE TO DIRECTION OF CURRENT FLOW THERETHROUGH FOR CONNECTING THE LOAD CIRCUIT TO SAID OTHER POLE OF THE RESERVE CELL DURING PERIODS OF CHARGE AND FOR CONNECTING SAID OTHER POLE OF SAID NORMAL USE CELL TO THE LOAD CIRCUIT DURING PERIODS OF DISCHARGE, MEANS FOR DETECTING A DIFFERENCE OF POTENTIAL BETWEEN SAID OTHER POLES OF SAID NORMAL USE CELL AND SAID RESERVE CELL AND A RELAY CONNECTED TO SAID DETECTING MEANS TO CONNECT SAID RESERVE CELL AND SAID NORMAL USE CELL IN PARALLEL WHEN SAID DIFFERENCE OF POTENTIAL ACHIEVES A SELECTED VALUE.
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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |