US4087595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-cell battery and method of making
Assignee: Duracell Inc USA
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Filing: 1976-01-15
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Granted: 1978-05-02
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Expires: 1996-01-15
Abstract
Abstract A battery sealed against electrolyte leakage by surrounding a stack of cells with cylindrical layer of two ply construction with absorbing or blotting paper surrounded by an impervious plastic cylindrical layer, with hot melt plastic plugs at both ends of the cylinder to form a leakproof sealed container for the stack of cells.
Inventors
- 👤 P. R. Mallory & Co. Inc.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:15
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/42; H01M6/46; H01M50/00; H01M50/50; H01M50/502; H01M50/503; H01M50/509; H01M50/51; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/4911
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
92 words
A multi-cell electric battery, comprising a plurality of electrolyte containing cells, with electrical interconnections between the cells and end tabs for the outer cells for connection to an external circuit, disposed within an insulating plastic tube impervious to the electrolyte originally open at both ends; and means for substantially completely sealing the cells within said tube wherein said means includes a hot-melt plastic adhesive material which is adheringly bonded to said insulating tube at said open ends with said plastic material forming end plugs which substantially completely sealingly close said open ends.
Claim 2
Dependent Claim
92 words
A multi-cell electric battery, comprising a plurality of electrolyte containing cells, with electrical interconnections between the cells and end tabs for the outer cells for connection to an external circuit, disposed within an insulating plastic tube impervious to the electrolyte originally open at both ends; and means for substantially completely sealing the cells within said tube wherein said means includes a hot-melt plastic adhesive material which is adheringly bonded to said insulating tube at said open ends with said plastic material forming end plugs which substantially completely sealingly close said open ends.
Claim 3
Dependent Claim
53 words
A multi-cell electric battery, as in claim 1, in which said plastic insulating tube encircling said cells includes an inner layer of absorbent material adapted to absorb any electrolyte that leaks from the individual cells to which absorbent material and plastic said sealing end plugs adhere, to cooperate to confine said electrolyte leakage.
Claim 4
Dependent Claim
30 words
A multi-cell electric battery, as in claim 2 wherein said tube is crimped at both open ends prior to application of the hot-melt plastic adhesive to form said end plugs.
Claim 5
Dependent Claim
40 words
A multi-cell electric battery, as in claim 1, in which a housing shell for said sealed, cell containing tube consists of an inexpensive cardboard material, protected from electrolyte leakage of the cells by said sealed insulating tube containing said cells.
Claim 6
Independent Claim
96 words
The method of sealing a multi-cell battery of electrolyte containing cells to prevent electrolyte leakage to the exterior of the battery and to thereby prevent ambiguity and doubt about the operative condition of the battery, comprising: arranging the cells in appropriate electrical and physical order, partially enclosing the stacked cells in a plastic enclosure impervious to the electrolyte of the cells, substantially completely closing said enclosure with a melted hot-melt plastic adhesive material and allowing said adhesive material to solidify to substantially completely seal said enclosure so that no electrolyte can leak out of said enclosure.
Claim 7
Independent Claim
96 words
The method of sealing a multi-cell battery of electrolyte containing cells to prevent electrolyte leakage to the exterior of the battery and to thereby prevent ambiguity and doubt about the operative condition of the battery, comprising: arranging the cells in appropriate electrical and physical order, partially enclosing the stacked cells in a plastic enclosure impervious to the electrolyte of the cells, substantially completely closing said enclosure with a melted hot-melt plastic adhesive material and allowing said adhesive material to solidify to substantially completely seal said enclosure so that no electrolyte can leak out of said enclosure.
Claim 8
Dependent Claim
22 words
The method of claim 5, in which said enclosure is formed as a tube including an inner layer of electrolyte absorbing material.
Claim 9
Dependent Claim
17 words
A multi-cell electric battery as in claim 1 wherein said hot-melt plastic adhesive is a polyterpene resin.
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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) | 1981-05-01 | 1981-10-31 | 1982-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-01 | 1985-10-31 | 1986-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-01 | 1989-10-31 | 1990-05-02 | $7700.00 | Window Closed / Lapsed |