US3200320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charging means with magnetic contacts for battery operated appliances
Assignee: Duracell Inc USA
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Filing: 1962-11-13
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Granted: 1965-08-10
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Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Mallory Henry Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:54
CPC Classifications
F; F21; F21L; F21L4/00; F21L4/08; A; A61; A61C; A61C17/00; A61C17/16; A61C17/22; A61C17/224; B; B26; B26B; B26B19/00; B26B19/28; B26B19/286; H; H02; H02J; H02J7/00; H02J7/70
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
A RECHARGEABLE BATTERY DEVICE COMPRISING, IN COMBINATION, A CASING, A RECHARGEABLE BATTERY HAVING TERMINALS OF OPPOSED POLARITY IN SAID CASING, A PAIR OF SPACED POLE SHOES RESPECTIVELY CONNECTED TO SAID TERMINALS IN SAID CASINGR AND HAVING THEIR ENDS EXTENDING THEREFROM, MEANS FOR ESTABLISHING A MAGNETIC FIELD BETWEEN SAID POLE SHOES WHILE MAINTAINING THEM ELECTRICALLY DISCONNECTED FROM EACH OTHER, AT LEAST ONE UNIDRECTIONAL CONDUCTOR INTERPOSED BETWEEN SAID POLE SHOES AND SAID BATTERY, A LOAD CIRCUIT FOR SAID BATTERY, AND SWITCHING MEANS FOR CONNECTING SAID LOAD CIRCUIT TO SAID BATTERY AND FOR DISCONNECTING IT THEREFROM.
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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |