Machine and method for forming a pleated and wound electrical capacitor with a metallized dielectric
US4181552A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1978 |
| Grant date | Jan 1, 1980 |
| Priority date | — |
| Expiry date | Apr 21, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1015
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A machine and a method are disclosed for forming pleated and wound electrical capacitors having a metallized dielectric which is metallized on both sides to form electrodes thereon. The metallized dielectric material is fed from supply rollers and it is pulled tightly over one or more rotatable discs so that it is locked firmly onto the periphery thereof. In one embodiment, three rotatable discs are employed and the center disc projects beyond the other two discs which are aligned at acute angles with respect to the center disc. After the dielectric material leaves these discs, it passes through a low pressure air stream which smooths out the wrinkles in the material. It is then fed under tension around a substantial portion of the periphery of a relatively large winding wheel. A winding mandrel engages a point on the periphery of the winding wheel and receives the free end of the metallized dielectric material so that the pleated metallized dielectric material is still under tension when it is received by the mandrel. The mandrel and the winding wheel are moveable relative to each other as the capacitor builds up on the mandrel. In another alternate version, a fixed mandrel is emp…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.