US3217226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery chargers
Assignee: Individual
•
Filing: 1961-04-18
•
Granted: 1965-11-09
•
Expires: 1981-04-18
Abstract
No abstract record available.
Inventors
- 👤 Louis N Strain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:32
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/90; H02J7/92; Y; Y10; Y10S; Y10S320/00; Y10S320/18; Y10S320/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
IN A BATTERY CHARGER, THE COMBINATIOIN OF A CHARGING CIRCUIT; CONTROL MEANS RESPONSIVE TO TERMINAL VOLTAGE OF THE BATTERY BEING CHARGED AND NORMALLY OPERATIVE TO INTERRUPT THE SAID CHARGING CIRCUIT IN RESPONSE TO OCCURRENCE OF A PREDETERMINED BATTERY TERMINAL VOLTAGE; TIMER MEANS OPERATIVE TO DETERMINED TWO CONCURRENTLY COMMENCING TIME PERIODS OF DIFFERENT LENGTH; FIRST MEANS CONTROLLED BY SAID TIMER MEANS AND OPERATIVE TO PREVENT SAID CONTROL MEANS FROM INTERRUPTING SAID CHARGING CIRCUIT DURING THE THE SHORTER OF SAID TIME PERIODS AND TO ACCOMPLISH INTERRUPTION OF SAID CHARGING CIRCUIT AT THE END OF SAID SHORTER PERIOD IN EVENT OF OCCURRENCE OF SAID PREDETERMINED BATTERY TERMINAL VOLTAGE DURING SAID SHORTER PERIOD; SECOND MEANS CONTROLLED BY SAID TIMER MEANS AND OPERATIVE TO INTERRUPT CHARGING AT THE END OF THE LONGER OF SAID TIME
Claim 2
Dependent Claim
130 words
IN A BATTERY CHARGER, THE COMBINATIOIN OF A CHARGING CIRCUIT; CONTROL MEANS RESPONSIVE TO TERMINAL VOLTAGE OF THE BATTERY BEING CHARGED AND NORMALLY OPERATIVE TO INTERRUPT THE SAID CHARGING CIRCUIT IN RESPONSE TO OCCURRENCE OF A PREDETERMINED BATTERY TERMINAL VOLTAGE; TIMER MEANS OPERATIVE TO DETERMINED TWO CONCURRENTLY COMMENCING TIME PERIODS OF DIFFERENT LENGTH; FIRST MEANS CONTROLLED BY SAID TIMER MEANS AND OPERATIVE TO PREVENT SAID CONTROL MEANS FROM INTERRUPTING SAID CHARGING CIRCUIT DURING THE THE SHORTER OF SAID TIME PERIODS AND TO ACCOMPLISH INTERRUPTION OF SAID CHARGING CIRCUIT AT THE END OF SAID SHORTER PERIOD IN EVENT OF OCCURRENCE OF SAID PREDETERMINED BATTERY TERMINAL VOLTAGE DURING SAID SHORTER PERIOD; SECOND MEANS CONTROLLED BY SAID TIMER MEANS AND OPERATIVE TO INTERRUPT CHARGING AT THE END OF THE LONGER OF SAID TIME
References Cited (Backward Citations)
US2979650A
Cited
US2987663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |