Lubricant for wire used for forming the stator windings of an electrical refrigerating compressor
US6461730B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1996 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Nov 12, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2947
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A lubricant for a wire which is first insulated by means, of a lacquer coating, the wire being used for forming the stator windings of an electrical refrigerating compressor. The lubricant consists of one or more compounds of the formula CH3—Xn—R, wherein X is a linear or branched hydrocarbon group with n carbon atoms, wherein n is up to 22, and R may be hydrogen or a plurality of different radicals, either in a pure form or dissolved in a solvent. The lubricant is applied to the wire to reduce its coefficient of friction, and it is remarkable for its compatibility with the environmentally unharmful refrigerants, such as R134a (1,1,1,2-tetrafluoroethane).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.