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US4520085A
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Gas-tight primary battery
Assignee: Sonval SA
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Filing: 1983-12-22
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Granted: 1985-05-28
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Expires: 2003-12-22
Abstract
Abstract Individual cells defined by metallic housing elements which at the same time serve as leads or pole plates (1, 2), have a narrow annular insulating body (3) which is arranged in the edge zone of the housing elements and holds the pole plates (1, 2) at a mutual distance. To obtain a stable cell assembly with precisely defined and reproduceable dimensions, an insulating body (3) is proposed which consists of a metal core (4) and an electrically insulating oxide-ceramic layer, formed thereon, as the potential insulation. The insulating body (3) is irreleasably joined to the pole plates (1, 2) by means of a connecting layer (8) which is resistant to chemicals.
Inventors
- 👤 Paul-Julian Wyser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:29
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/42; H01M6/46; H01M6/48; H01M6/04; H01M6/06; H01M6/12; H01M50/00; H01M50/10; H01M50/102; H01M50/103; H01M50/183
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
74 words
A gas-tight primary battery comprising one or more individual cells comprising metallic housing elements, negative and positive leads, wherein said leads are formed from said metallic housing elements, and a connecting element between the outer rims of said negative and positive leads, wherein said connecting element comprises a metallic body with at least one surface adjacent to said lead comprising an inner layer of aluminum and an outer, electrically insulating, layer of aluminum oxide.
Claim 2
Dependent Claim
74 words
A gas-tight primary battery comprising one or more individual cells comprising metallic housing elements, negative and positive leads, wherein said leads are formed from said metallic housing elements, and a connecting element between the outer rims of said negative and positive leads, wherein said connecting element comprises a metallic body with at least one surface adjacent to said lead comprising an inner layer of aluminum and an outer, electrically insulating, layer of aluminum oxide.
Claim 3
Dependent Claim
24 words
The gas-tight primary battery of claim 1 wherein said metallic body is a ring comprising aluminum entirely covered with an anodized aluminum oxide layer.
Claim 4
Dependent Claim
22 words
The gas-tight primary battery of claim 1 wherein said metallic body comprises a composite metal with at least one surface comprising aluminum.
Claim 5
Dependent Claim
19 words
The gas-tight primary battery of claim 1 wherein said metallic body is electrically connected with one of said leads.
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) | 1988-05-27 | 1988-11-26 | 1989-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-27 | 1992-11-26 | 1993-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-27 | 1996-11-26 | 1997-05-28 | $7700.00 | Window Closed / Lapsed |