Magnet wire for hermetic motors
US4379807A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1981 |
| Grant date | Apr 12, 1983 |
| Priority date | — |
| Expiry date | Mar 13, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2947
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnet wire suitable for use in hermetic motors comprising a conductor wire, an insulating intermediate layer, a polyamide outer layer, and an organic polymeric lubricant coating on the outer layer. The lubricant has a pour point below about 15.degree. F. (-9.degree. C.) and wets the outer layer. A preferred lubricant is soluble in monochlorodifluoromethane and in dichlorodifluoromethane, and comprises a saturated C.sub.2 -C.sub.4 ether of ethylene oxide and 1,2-propylene oxide copolymers. A particularly preferred lubricant has a viscosity of about 100 to 400 SUS (21 to 87 centistokes) and a pour point of about -60.degree. F. (-51.degree. C.).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.