Patent US3099782A successfully refreshed from Google Patents.
US3099782A
Expired / Lapsed
US
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Automatic battery charging control with upper and lower voltage limits
Assignee: LA MARCHE Manufacturing Co
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Filing: 1959-12-15
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Granted: 1963-07-30
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Expires: 1979-12-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:09
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/90; H02J7/96; H02J7/02; H02J7/04; H02J7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A BATTERY CHARGING CONTROL COMPRISING A SENSING CIRCUIT, A CONTROL CIRCUIT RESPONSIVE TO SAID SENSING CIRCUIT, AND SWITCHING CIRCUIT RESPONSIVE TO SAID CONTROL CIRCUIT FOR CONTROLLING THE POWER SORUCE TO THE BATTERY CHARGER, SAID SENSING CIRCUIT HAVING A PREDETERMINED CONSTANT REFERENCE VOLTAGE, A BATTERY VOLTAGE OPPOSED TO SAID REFERENCE VOLTAGE, AND MEANS STARTING FLOW OF CURRENT TO SAID CONTROL CIRCUIT AT A PREDETERMINED MINIMUM VOLTAGE OF SAID BATTERY AND FOR STOPPING FLOW OF CURRENT AT A PREDETERMINED MAXIMUM VOLTAGE OF SAID BATTERY, SAID REFERENCE VOLTAGE BEING MAINTAINED AT A CONSTANT LEVEL BY A ZENER DIODE, AND SAID MEANS COMPRISING A UNIJUNCTION TRANSISTOR.
Claim 2
Dependent Claim
102 words
A BATTERY CHARGING CONTROL COMPRISING A SENSING CIRCUIT, A CONTROL CIRCUIT RESPONSIVE TO SAID SENSING CIRCUIT, AND SWITCHING CIRCUIT RESPONSIVE TO SAID CONTROL CIRCUIT FOR CONTROLLING THE POWER SORUCE TO THE BATTERY CHARGER, SAID SENSING CIRCUIT HAVING A PREDETERMINED CONSTANT REFERENCE VOLTAGE, A BATTERY VOLTAGE OPPOSED TO SAID REFERENCE VOLTAGE, AND MEANS STARTING FLOW OF CURRENT TO SAID CONTROL CIRCUIT AT A PREDETERMINED MINIMUM VOLTAGE OF SAID BATTERY AND FOR STOPPING FLOW OF CURRENT AT A PREDETERMINED MAXIMUM VOLTAGE OF SAID BATTERY, SAID REFERENCE VOLTAGE BEING MAINTAINED AT A CONSTANT LEVEL BY A ZENER DIODE, AND SAID MEANS COMPRISING A UNIJUNCTION TRANSISTOR.
References Cited (Backward Citations)
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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) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |