Patent US181396A successfully refreshed from Google Patents.
US4048404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophysichemical device
Assignee: Duracell Inc USA
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Filing: 1976-03-08
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Granted: 1977-09-13
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Expires: 1996-03-08
Abstract
Abstract A fast chargeable and rechargeable energy storage system to serve as an electrical power supply, that can be fully charged or recharged in less than a minute, consisting of an electric cell with two polar electrodes, as to anode and cathode, with an electrolyte between them, in which the anode and the electrolyte are essentially non-gassing, and the operation during charge is a coupling of a chemical process with an electrochemical process. Circuit voltage is open 0.75 volt and energy storage capacity about 37.5 milliwatt hours in presently available units of small size.
Inventors
- 👤 Per Bro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:47
CPC Classifications
H; H01; H01M; H01M14/00; H01G; H01G9/00; H01M10/00; H01M10/36; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
159 words
An electrical component having a characteristic of both a battery and a capacitor in having a fast chargeable rate much greater than previously available storage batteries comprising; a positive electrode, said positive electroce including a silver element having an active surface layer of solidified, previously fused silver chloride thereon, said silver chloride layer constituting an insoluble, resistive film formed on said silver during charging by passing a high anodic current through the silver element greater than 0.1 amp/cm 2 , which resistive film will rapidly heat to fusion temperature during charging; a negative electrode insulatingly spaced from said positive electrode, said negative electrode being cadmium or zinc; an ionic conductor disposed between said two electrodes; said ionic conductor being water and a zinc or cadmium halide or a mixture thereof; a dielectric spacer between said two electrodes, said spacer being capable of retaining its structural integrity at elevated temperatures and capable of withstanding compressive loading; and an encasing housing.
Claim 2
Dependent Claim
159 words
An electrical component having a characteristic of both a battery and a capacitor in having a fast chargeable rate much greater than previously available storage batteries comprising; a positive electrode, said positive electroce including a silver element having an active surface layer of solidified, previously fused silver chloride thereon, said silver chloride layer constituting an insoluble, resistive film formed on said silver during charging by passing a high anodic current through the silver element greater than 0.1 amp/cm 2 , which resistive film will rapidly heat to fusion temperature during charging; a negative electrode insulatingly spaced from said positive electrode, said negative electrode being cadmium or zinc; an ionic conductor disposed between said two electrodes; said ionic conductor being water and a zinc or cadmium halide or a mixture thereof; a dielectric spacer between said two electrodes, said spacer being capable of retaining its structural integrity at elevated temperatures and capable of withstanding compressive loading; and an encasing housing.
Claim 3
Dependent Claim
27 words
An electrical component as in claim 1 in which said negative electrode is cadmium, and said ionic conductor comprises a mixture of zinc chloride and cadmium chloride.
Claim 4
Dependent Claim
36 words
An electrical component as in claim 1 wherein the geometry of said positive electrode is such that the heat generated during charging is adequate to fuse said silver chloride during rapid charging of said electrical component.
Claim 5
Dependent Claim
24 words
An electrical component as in claim 2 in which said ionic conductor comprises cadmium chloride, zinc chloride, and a salt to attain desired conductivity.
Claim 6
Dependent Claim
15 words
An electrical component, as in claim 4, in which said salt is NaClO 4 .
Claim 7
Dependent Claim
29 words
An electrical component as in claim 3 wherein said negative electrode is cadmium and said ionic conductor is an aqueous electrolyte containing zinc chloride, cadmium chloride and sodium perchlorate.
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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) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |