Squirrel-cage rotor structure for an asynchronous electrical motor
US4249098A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1976 |
| Grant date | Feb 3, 1981 |
| Priority date | — |
| Expiry date | Jun 29, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K17/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotor component of an asynchronous electrical motor of the squirrel-cage type comprises a cylindrical array of circumferentially spaced short-circuited conductor bars having the opposite end portions thereof seated in corresponding circular grooves provided in the surfaces of annular conductive end rings. The ends of the conductor bars are soldered to adjoining surface portions of the grooves by placing solder in the gaps between the bar ends and groove surfaces and directly heating only the end rings so as to bring them up to the working temperature for effecting the soldering operation. The end rings are heated up circumferentially in a section-by-section manner so that soldering of the conductor bar ends to the end rings also takes place in a section-by-section manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.