Flat cell
US4732825A · kind A · utility
14Cited by
4References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1986 |
| Grant date | Mar 22, 1988 |
| Priority date | — |
| Expiry date | Jun 12, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M2300/0025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A flat cell is sealed along the confronting peripheral inner surfaces of positive and negative terminal plates. A pair of sealing films are disposed on the respective peripheral inner surfaces. Each sealing film is comprised of a first thermoplastic layer composed of maleic acid modified polyethylene thermally secured to the peripheral inner surface, a second intermediate thermoplastic layer composed of high-density polyethylene and a third thermoplastic layer composed of maleic acid modified polyethylene so that the confronting third layers of the pair of sealing films are thermally secured to each other to seal the flat cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.