Method for manufacturing an insulated electric coil
US4033805A · kind A · utility
8Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1976 |
| Grant date | Jul 5, 1977 |
| Priority date | — |
| Expiry date | Feb 24, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/251
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A compound mica sheet is prepared by bonding a mica sheet to a woven fabric through a powdered epoxy resin with curing agent. The mica sheet holds a cured thermosetting resin composition impregnated therein and has an uncured epoxy resin composition including a curing agent impregnated therein. When thermosetting resin is forcedly impregnated, through vacuum/pressure impregnation, into a coil wound with the compound mica sheet which is adapted for use in medium and high voltage electric apparatus, and then cured, an excellent insulated coil is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.