US3723699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intercell connection making in electric storage batteries
Assignee: ZF International UK Ltd
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Filing: 1970-04-30
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Granted: 1973-03-27
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Expires: 1990-04-30
Abstract
Abstract In forming an intercell connector in a storage battery, plate groups in adjacent cells are provided with upstanding lugs, one of which has integral therewith a bar extending into a hole in the partition wall. The connection is made by applying pressure to the lugs with electrodes and then passing a current, and the invention consists essentially in shaping the electrode acting on the lug which does not have a bar so that a coining operation is performed and the hole in the cell wall is sealed before electric current is passed.
Inventors
- 👤 B Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:59
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/50; H01M50/528; H01M50/529; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49204
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
143 words
A method of forming a connection between plate groups in adjacent cells of an electric storage battery through a hole in a partition wall separating said cells, comprising the steps of providing two plate groups with first and second upstanding lugs respectively extending parallel to the partition wall, providing the first lug only with an integral bar which extends into said hole, engaging the lugs with a pair of electrodes at opposite sides of the partition wall, deforming the second lug with one of said electrodes so that the edge of the hole in the partition wall sealingly engages the second lug to form between the first and second lugs and the partition wall a liquid-tight seal, and only then passing current between the electrodes while maintaining pressure between the electrodes so as to soften or melt the bar and interconnect the lugs.
Claim 2
Independent Claim
143 words
A method of forming a connection between plate groups in adjacent cells of an electric storage battery through a hole in a partition wall separating said cells, comprising the steps of providing two plate groups with first and second upstanding lugs respectively extending parallel to the partition wall, providing the first lug only with an integral bar which extends into said hole, engaging the lugs with a pair of electrodes at opposite sides of the partition wall, deforming the second lug with one of said electrodes so that the edge of the hole in the partition wall sealingly engages the second lug to form between the first and second lugs and the partition wall a liquid-tight seal, and only then passing current between the electrodes while maintaining pressure between the electrodes so as to soften or melt the bar and interconnect the lugs.
Claim 3
Dependent Claim
39 words
The method as claimed in claim 1, comprising the further steps of providing each lug with an annular rib surrounding the hole in the partition wall, and forcing the ribs into contact with the partition wall by the electrodes.
References Cited (Backward Citations)
US2974284A
Cited
GB1000611A
Cited
GB1090075A
Cited
GB1062097A
Cited
US3275793A
Cited
US3315133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |