Method of manufacturing slot insulation for dynamo-electric machines from molded laminates and slot insulation produced by the method
US4162340A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 9, 1977 |
| Grant date | Jul 24, 1979 |
| Priority date | — |
| Expiry date | Mar 9, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31525
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The method for manufacturing profiled laminated insulation material having a U- or L-shaped configuration for installation in the slots of a dynamo-electric machine wherein a number of carrier bands of an epoxide resin-impregnated or resin-coated insulation material such as a combination of layers of aromatic polyamide paper and woven glass filaments are assembled for lamination each to the other. Reinforcing plies of insulation material such as woven glass filaments or glass mats and strips of fiber-filled molding material such as containing epoxide resin and short E-glass-fibers are inserted between adjacent carrier bands at regions thereof desired to impart increased thickness to the final laminated structure, and the assembly of the carrier bands, reinforcing plies and strips of fiber-filled molding material is then pressed to effect lamination and penetration of some of the resinous-molding material into and filling spaces in transition regions between thickened and non-thickened parts of the laminated structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.