Molding material for the stator of a submersible motor
US4546130A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1984 |
| Grant date | Oct 8, 1985 |
| Priority date | — |
| Expiry date | Aug 15, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B3/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A molding material having low moisture permeability for use in the stators of submersible motors. The molding material comprises approximately 20-30 parts by weight of an epoxy resin, approximately 1-3 parts by weight of a curing agent, approximately 0.5-1.5 parts by weight of zinc stearate, approximately 2-3 parts by weight of a mechanical reinforcing agent, approximately 7.5-56.5 parts by weight of quartz powder, and one or more substances selected from anhydrous gypsum and silica gel, with the total amount of said inorganic substance(s) being approximately 55-20 parts by weight, and with the total amount of quartz powder and said inorganic substance(s) being approximately 62.5-76.5 parts by weight. Because of its low moisture permeability, the insulating properties of the molding material can be maintained indefinitely.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.