US4145485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for sealing battery
Assignee: Polaroid Corp
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Filing: 1977-06-27
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Granted: 1979-03-20
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Expires: 1997-06-27
Abstract
Abstract A method of sealing a laminar battery in which the central region of the battery is cooled and held under pressure while the peripheral regions of the battery are heated under the same or a lower pressure. The thicknesses of the materials are chosen so that the completed battery is substantially as thick at the edges as in its central regions.
Inventors
- 👤 Gordon F. Kinsman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:37
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/42; H01M6/46; H01M6/48; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/49112
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
141 words
A thin, flat laminar battery comprising cells including active components comprising laminar anodes and cathodes separated by laminar separators, said cells being chemically isolated and electrically connected in series by intermediate laminar intercell connectors, insulating frames having central openings receiving said anodes and cathodes and being bonded together to form a peripheral seal surrounding said active components, and terminal laminae comprising opposed thin metal terminal sheets bonded to thermoplastic liquid impervious conductive current collectors, said current collectors being in contact with electrodes of opposite polarity on either side of said battery and being bonded to said frames at their peripheries to complete a seal about said active components without deformation of said metal terminal sheets; in which the combined thicknesses of said frames are substantially equal to the combined thicknesses of said anodes, said cathodes, said separators and said intercell connectors.
Claim 2
Dependent Claim
141 words
A thin, flat laminar battery comprising cells including active components comprising laminar anodes and cathodes separated by laminar separators, said cells being chemically isolated and electrically connected in series by intermediate laminar intercell connectors, insulating frames having central openings receiving said anodes and cathodes and being bonded together to form a peripheral seal surrounding said active components, and terminal laminae comprising opposed thin metal terminal sheets bonded to thermoplastic liquid impervious conductive current collectors, said current collectors being in contact with electrodes of opposite polarity on either side of said battery and being bonded to said frames at their peripheries to complete a seal about said active components without deformation of said metal terminal sheets; in which the combined thicknesses of said frames are substantially equal to the combined thicknesses of said anodes, said cathodes, said separators and said intercell connectors.
Claim 3
Dependent Claim
124 words
A flat laminar battery comprising a plurality of superposed laminar cells separated by laminar conductive plastic intercell connectors and terminated by conductive plastic current collectors having metal terminals adhered to the outer surfaces thereof, contiguous laminar insulating frames of hot melt adhesive between said intercell connectors and said current collectors and formed with central openings receiving said cells, said frames being fused to each other and to contiguous portions of said intercell connectors and said current collectors to form peripheral seals around said cells, in which said frames have thicknesses determined in dependence on the combined thickness of said cells and said intercell connectors so that each lamina of said battery has edges substantially coplanar with its central portions after fusion of said frames.
Claim 4
Dependent Claim
124 words
A flat laminar battery comprising a plurality of superposed laminar cells separated by laminar conductive plastic intercell connectors and terminated by conductive plastic current collectors having metal terminals adhered to the outer surfaces thereof, contiguous laminar insulating frames of hot melt adhesive between said intercell connectors and said current collectors and formed with central openings receiving said cells, said frames being fused to each other and to contiguous portions of said intercell connectors and said current collectors to form peripheral seals around said cells, in which said frames have thicknesses determined in dependence on the combined thickness of said cells and said intercell connectors so that each lamina of said battery has edges substantially coplanar with its central portions after fusion of said frames.
References Cited (Backward Citations)
US2521800A
Cited
US2843649A
Cited
US3563805A
Cited
US3674565A
Cited
US3770504A
Cited
US3907599A
Cited
US4007472A
Cited
US4028479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-19 | 1982-09-18 | 1983-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-19 | 1986-09-18 | 1987-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-19 | 1990-09-18 | 1991-03-20 | $7700.00 | Window Closed / Lapsed |