Capacitor foil of aluminum or an aluminum alloy
US4916285A · kind A · utility
8Cited by
14References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1989 |
| Grant date | Apr 10, 1990 |
| Priority date | — |
| Expiry date | Mar 6, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A capacitor foil made of aluminum or an aluminum alloy whose edge has been treated using a LASER beam exhibits practically no burrs or cracks, as a result of which an increase in the nominal field strength of capacitors made with such a foil becomes possible. A further increase in the nominal field strength is achieved by creating at least one edge with a LASER beam which is enclosed in a reactive gas or gas mixture having a concentration of oxygen greater than the concentration of oxygen in air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.