Layer stack
US6657851B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 2002 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Jul 26, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G9/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention is directed to a layer stack for the acceptance of a liquid having a suction layer (1) with high absorbency sufficing for sucking up the liquid from the edge of the layer stack into its middle and having a first storage layer (2) with low absorbency that is not sufficient for sucking up the liquid from the edge of the layer stack up to its middle between which an intermediate layer (3) composed of non-absorbent material and adjoining the first storage layer (3) is arranged, whereby a non-absorbent edge layer (7) is arranged at that side of the first storage layer (2) facing away from the intermediate layer (3), and whereby the intermediate layer (3) comprises through holes (4) whose plurality, size and distribution is selected such that some of the liquid suctioned up by the suction layer (1) can proceed via the holes (4) to the first storage layer and thoroughly saturate this. By foregoing a second suction layer, electrolytic capacitors with a significantly lower space requirement can be manufactured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.