Linear induction motor for elevator
US5174416A · kind A · utility
8Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1992 |
| Grant date | Dec 29, 1992 |
| Priority date | — |
| Expiry date | Jan 29, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B11/0407
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A linear induction motor for an elevator which includes a secondary, stationary element having a body formed with a plurality of iron-core mounting holes arranged longitudinally of the body at a certain interval, and iron cores disposed in the holes. The stationary, secondary element allows magnetic flux flowing therethrough to pass through the iron cores, thereby reducing the dimension of the total magnetic gap in the motor. Furthermore, the combination of the iron cores in which eddy currents flow with difficulty and the body along which eddy currents tend to flow makes it possible to reduce the ineffective eddy currents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.