Elevator motor with flat construction
US5783895A · kind A · utility
8Cited by
14References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1995 |
| Grant date | Jul 21, 1998 |
| Priority date | — |
| Expiry date | Apr 3, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B11/0438
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An elevator motor (2) employing permanent magnets (30) attached in a circle on the surface (36) of the rotor disc (12). The rotor disc (12) forms part of both the magnetic circuit and the supporting structure of the rotor (13). The permanent magnets (30) are placed in a separate cavity formed in the stator disc and having one side open, the cavity also housing the stator windings (17). The outer cavity wall directed towards the rotor disc (12) is provided with a sealing member to close the cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.