Pleated metallized film capacitor with sprayed edge terminations
US4127891A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 12, 1977 |
| Grant date | Nov 28, 1978 |
| Priority date | — |
| Expiry date | Jul 12, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G4/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical capacitor is formed utilizing a thin dielectric layer which is metallized on both sides to provide electrode areas. Unmetallized margin areas are provided on one side of the dielectric layer along the longitudinal edges of the layer, an unmetallized strip is provided in the center of the other side of the dielectric area which extends along the longitudinal dimension of the layer. The capacitor is formed by pleating, or folding, the dielectric layer along its longitudinal dimension an odd number of times, but with at least five pleat lines being formed and with one of the pleat lines being along the center of the dielectric layer so that the unmetallized strip is on the inside of the center pleat. The center pleat extends beyond the ends of the other pleats on one longitudinal edge of the capacitor while the ends of the metallized dielectric layer which contain the unmetallized margin areas extend beyond the ends of the pleats on the other longitudinal edge of the capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.