US3745049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically commutating battery cases
Assignee: Duracell Inc USA
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Filing: 1971-04-23
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Granted: 1973-07-10
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Expires: 1991-04-23
Abstract
Abstract A combination battery cell holder and switch in which a stack of one or more cells is disposed co-axially in rotary cylindrical case having two windows through which the cell surfaces of opposite polarities may be engaged or disengaged by two contacts external of the case and supported in a housing that also encloses and supports the case for angular motion to close or to open the circuit between the contacts and the cell surface.
Inventors
- 👤 G Kaye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:58
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/20; H01M50/204; H01M50/207; H01M50/216; H04; H04R; H04R25/00; H04R25/60; H04R25/602; H01H; H01H2300/00; H01H2300/004; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |