US3344343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retained capacity indicator with microcoulometer and thermistor
Assignee: Individual
•
Filing: 1966-09-02
•
Granted: 1967-09-26
•
Expires: 1986-09-02
Abstract
No abstract record available.
Inventors
- 👤 Ferdinand J John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:02
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/36; G01R31/385; G01R31/374; G01R31/382; G01R31/3828; G01R31/3832; G01R31/3833
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A BATTERY RETAINED CAPACITY INDICATOR FOR INDICATING THE USEFUL REMAINING CAPACITY OF A STORED BATTERY COMPRISING TERMINAL MEANS ACROSS WHICH SAID BATTERY IS CONNECTED, A MICROCOULOMETER AND A THERMISTOR CONNECTED IN SERIES WITH SAID MICROCOULOMETER BETWEEN SAID TERMINAL MEANS, SAID THERMISTOR BEING AT THE TEMPERATURE OF THE BATTERY, THE RATE OF DETERIORATION OF CAPACITY OF SAID BATTERY INCREASING NON-LINEARLY WITH STORAGE TEMPERATURE AND THE RESISTANCE OF SAID THERMISTOR DECREASING NON-LINEARLY WITH TEMPERATURE, WHEREIN SAID THERMISTOR HAS A RESISTANCE AT TEMPERATURE OF SAID BATTERY EQUAL TO THE RATIO OF THE RATED VOLTAGE OF SAID BATTERY AND THE CURRENT FLOWING AT THE TEMPERATURE OF SAID BATTERY.
Claim 2
Dependent Claim
104 words
A BATTERY RETAINED CAPACITY INDICATOR FOR INDICATING THE USEFUL REMAINING CAPACITY OF A STORED BATTERY COMPRISING TERMINAL MEANS ACROSS WHICH SAID BATTERY IS CONNECTED, A MICROCOULOMETER AND A THERMISTOR CONNECTED IN SERIES WITH SAID MICROCOULOMETER BETWEEN SAID TERMINAL MEANS, SAID THERMISTOR BEING AT THE TEMPERATURE OF THE BATTERY, THE RATE OF DETERIORATION OF CAPACITY OF SAID BATTERY INCREASING NON-LINEARLY WITH STORAGE TEMPERATURE AND THE RESISTANCE OF SAID THERMISTOR DECREASING NON-LINEARLY WITH TEMPERATURE, WHEREIN SAID THERMISTOR HAS A RESISTANCE AT TEMPERATURE OF SAID BATTERY EQUAL TO THE RATIO OF THE RATED VOLTAGE OF SAID BATTERY AND THE CURRENT FLOWING AT THE TEMPERATURE OF SAID BATTERY.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |