US3113255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system responsive to voltage, particularly for controlling the charging or discharging operation of an accumulator battery
Assignee: Accumulatorenfabrik Sonnenschein GmbH
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Filing: 1960-12-23
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Granted: 1963-12-03
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Expires: 1980-12-23
Abstract
No abstract record available.
Inventors
- 👤 Eberts Klaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:59
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/90; H02J7/96
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN A CONTROL SYSTEM, THE COMBINATION COMPRISING A SOURCE OF CURRENT HAVING A VARIABLE VOLTAGE, A CONDUCTIVE UNIT INCLUDING A CONDUCTIVE ELEMENT HAVING A NON-LINEAR VOLTAGE-RESISTANCE CHARACTERISTIC, SAID UNIT BEING CONNECTED IN SHUNT ACROSS SAID SOURCE TO CONVERT ELECTRICAL ENERGY SUPPLIED BY SAID SOURCE INTO HEAT, AND A HEAT-RESPONSIVE ELEMENT WHICH IS MOUNTED IN HEAT-EXCHANGE RELATIONSHIP TO SAID UNIT AND RESPONDS TO A RISE OF ITS TEMPERATURE ABOVE A PREDETERMINED DEGREE, SAID CHARACTERISTIC BEING SO CHOSEN THAT SAID UNIT WILL NOT HEAT SAID HEAT-RESPONSIVE ELEMENT TO A TEMPERATURE ABOVE SAID DEGREE UNLESS SAID VARIABLE VOLTAGE PASSES THROUGH A PREDETERMINED LIMIT, SAID CHARACTERISTIC SHOWING AN ABRUPT CHANGE OF RESISTANCE UPON PASSAGE OF THE VOLTAGE THROUGH SAID LIMIT.
Claim 2
Dependent Claim
116 words
IN A CONTROL SYSTEM, THE COMBINATION COMPRISING A SOURCE OF CURRENT HAVING A VARIABLE VOLTAGE, A CONDUCTIVE UNIT INCLUDING A CONDUCTIVE ELEMENT HAVING A NON-LINEAR VOLTAGE-RESISTANCE CHARACTERISTIC, SAID UNIT BEING CONNECTED IN SHUNT ACROSS SAID SOURCE TO CONVERT ELECTRICAL ENERGY SUPPLIED BY SAID SOURCE INTO HEAT, AND A HEAT-RESPONSIVE ELEMENT WHICH IS MOUNTED IN HEAT-EXCHANGE RELATIONSHIP TO SAID UNIT AND RESPONDS TO A RISE OF ITS TEMPERATURE ABOVE A PREDETERMINED DEGREE, SAID CHARACTERISTIC BEING SO CHOSEN THAT SAID UNIT WILL NOT HEAT SAID HEAT-RESPONSIVE ELEMENT TO A TEMPERATURE ABOVE SAID DEGREE UNLESS SAID VARIABLE VOLTAGE PASSES THROUGH A PREDETERMINED LIMIT, SAID CHARACTERISTIC SHOWING AN ABRUPT CHANGE OF RESISTANCE UPON PASSAGE OF THE VOLTAGE THROUGH SAID LIMIT.
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) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |