US4180624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage battery with aqueous electrolyte and recombiner
Assignee: VARTA Batterie AG
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Filing: 1979-01-24
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Granted: 1979-12-25
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Expires: 1999-01-24
Abstract
Abstract Bi-directional valve means are provided between the interior and the ambient, opening outward at a predetermined internal overpressure, and inward at a predetermined underpressure.
Inventors
- 👤 August Winsel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:06
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/30; H01M50/317; H01M50/325; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
76 words
A storage battery having an aqueous electrolyte and a recombination catalyst for recombining of hydrogen and oxygen evolving during charging or self-discharge, said storage battery comprising a communicating gas-tight housing for the storage battery and the recombiner, and two valves in said housing, one of said valves opening in response to a predetermined overpressure relative to the ambient outer atmosphere and the other of said valves opening in response to the falling below a predetermined underpressure.
Claim 2
Dependent Claim
76 words
A storage battery having an aqueous electrolyte and a recombination catalyst for recombining of hydrogen and oxygen evolving during charging or self-discharge, said storage battery comprising a communicating gas-tight housing for the storage battery and the recombiner, and two valves in said housing, one of said valves opening in response to a predetermined overpressure relative to the ambient outer atmosphere and the other of said valves opening in response to the falling below a predetermined underpressure.
Claim 3
Dependent Claim
21 words
The storage battery of claim 1 wherein the two valves are combined into a single dual-function valve having opposed transmission directions.
Claim 4
Dependent Claim
24 words
The storage battery of claim 1 wherein the communicating housings consists of a common housing for both the storage battery and the recombining means.
Claim 5
Dependent Claim
21 words
The storage battery of claim 1 wherein the communicating housing consists of two separate housings in gas communication with each other.
Claim 6
Dependent Claim
20 words
The storage battery of claim 1 wherein each valve means has an opening threshold at between 1 and 100 millibars.
Claim 7
Dependent Claim
15 words
The storage battery of claim 1 wherein the valve means is a slit type valve.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-24 | 1983-06-25 | 1983-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-24 | 1987-06-25 | 1987-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-24 | 1991-06-25 | 1991-12-25 | $7700.00 | Window Closed / Lapsed |