US3213345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polarized shorting fuse for battery cells
Assignee: Duracell Inc USA
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Filing: 1963-09-05
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Granted: 1965-10-19
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Expires: 1983-09-05
Abstract
No abstract record available.
Inventors
- 👤 Wallace D Loftus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:32
CPC Classifications
H; H01; H01H; H01H83/00; H01H83/10; H01M; H01M10/00; H01M10/42; H01M10/4207; H01M50/00; H01M50/50; H01M50/572; H01M50/574; H01M50/581; H02; H02H; H02H7/00; H02H7/18; H02J; H02J7/00; H02J7/50; H02J7/52; H10; H10D; H10D99/00; H01M2200/00; H01M2200/10; H01M2200/103; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
IN COMBINATION WITH A BATTERY COMPRISING A PLURALITY OF SERIALLY CONNECTED RECHARGEABLE CELLS EACH HAVING TERMINALS OF OPPOSED POLARITY; A POLARIZED SHORTING FUSE FOR EACH CELL; SAID FUSE COMPRISING A SEMICONDUCTOR CHIP HAVING FIRST AND SECOND REGIONS DEFINING A RECTIFIER JUNCTION THEREBETWEEN, FIRST AND SECOND TERMINALS RESPECTIVELY CONNECTED TO SAID REGIONS, THE CONNECTION BETWEEN ONE OF SAID REGIONS AND THE CORRESPONDING TERMINAL BEING CONSTITUTED BY A RESILIENTLY DEFORMED CONTACT SPRING HAVING ONE END PERMANENTLY CONNECTED TO SAID TERMINAL AND HAVING ITS OTHER END BONDED TO SAID REGION BY A LOW MELTING POINT SOLDER; THE TERMINALS OF SAID FUSE BEING SO CONNECTED TO THOSE OF THE CELL WITH WHICH IT IS ASSOCIATED AS TO HAVE
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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |