US3237078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rechargeable batteries and regulated charging means therefor
Assignee: Duracell Inc USA
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Filing: 1963-03-14
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Granted: 1966-02-22
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Expires: 1983-03-14
Abstract
No abstract record available.
Inventors
- 👤 Mallory Henry Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:52
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/50; H02J7/52; H02J7/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
AN ELECTRIC STORAGE BATTERY COMPRISING A PLURALITY OF RECHARGEABLE CELLS CONNECTED IN SERIES, MEANS FOR APPLYING A CHARGING VOLTAGE ACROSS THE BATTERY AT LEAST EQUAL TO THE SUM OF THE MAXIMUM VOLTAGES OF SAID CELLS IN THEIR FULLY CHARGED CONDITION, A PLURALITY OF VOLTAGE-SENSITIVE CURRENT GATING MEANS RESPECTIVELY CONSTITUTING SHUNTING CIRCUITS FOR SAID CELLS, SAID GATING MEANS BEING POORLY CONDUCTIVE WHEN THE VOLTAGE OF THE CELL SHUNTED THEREBY IS BELOW THE FULLY CHARGED VALUE AND BECOMING HIGHLY CONDUCTIVE WHEN SUCH VOLTAGE EXCEEDS SAID VALUE, AND A PLURALITY OF SOLID STATE SWITCHING DEVICES RESPECTIVELY INTERPOSED IN THE SHUNTING CIRCUIT OF THE SAID CELLS, SAID SWITCHING DEVICES NORMALLY DISABLING SAID SHUNTING CIRCUITS AND BEING RESPONSIVE TO THE APPLICATION OF CHARGING VOLTAGE TO SAID BATTERY TO COMPLETE SAID SHUNTING CIRCUITS.
Claim 2
Dependent Claim
127 words
AN ELECTRIC STORAGE BATTERY COMPRISING A PLURALITY OF RECHARGEABLE CELLS CONNECTED IN SERIES, MEANS FOR APPLYING A CHARGING VOLTAGE ACROSS THE BATTERY AT LEAST EQUAL TO THE SUM OF THE MAXIMUM VOLTAGES OF SAID CELLS IN THEIR FULLY CHARGED CONDITION, A PLURALITY OF VOLTAGE-SENSITIVE CURRENT GATING MEANS RESPECTIVELY CONSTITUTING SHUNTING CIRCUITS FOR SAID CELLS, SAID GATING MEANS BEING POORLY CONDUCTIVE WHEN THE VOLTAGE OF THE CELL SHUNTED THEREBY IS BELOW THE FULLY CHARGED VALUE AND BECOMING HIGHLY CONDUCTIVE WHEN SUCH VOLTAGE EXCEEDS SAID VALUE, AND A PLURALITY OF SOLID STATE SWITCHING DEVICES RESPECTIVELY INTERPOSED IN THE SHUNTING CIRCUIT OF THE SAID CELLS, SAID SWITCHING DEVICES NORMALLY DISABLING SAID SHUNTING CIRCUITS AND BEING RESPONSIVE TO THE APPLICATION OF CHARGING VOLTAGE TO SAID BATTERY TO COMPLETE SAID SHUNTING CIRCUITS.
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |