Arrangement for sealing an electric cell
US4150221A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 4, 1978 |
| Grant date | Apr 17, 1979 |
| Priority date | — |
| Expiry date | Apr 4, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An arrangement for sealing a button-type electric cell. Such a cell comprises a metal cup which contains a first electrode, and a metal cap which forms a cover to the cup and which contains a second electrode of opposite polarity. The rim of the cup is turned down over a seal disposed on the rim of the cap. A metal ring which has a cylindrical portion in contact with the inner face of the cylindrical wall of the cup, an intermediate portion which has a stair-case or an oblique cross-section and an annular portion which is orthogonal to the cylindrical portion is disposed in the cup, these latter two portions making it possible to compress the seal against the cylindrical wall of the cup.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.