Moving magnet type linear motor for automatic door
US5134324A · kind A · utility
42Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1990 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | Dec 13, 2010 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/132
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a moving magnet type linear motor for automatic door of the invention, a stator fixed inside a guide rail having a substantially .andgate.-shaped cross section and a moving unit having a substantially U-shaped cross section are combined so that a height of the linear motor can be the same as that of the guide rail and the moving unit is supported slidably relative to the guide rail and fixing members of the stator has at least the both longitudinal ends or the stroke ends formed of non-magnetic conductive materials in order that the moving magnet type linear motor for automatic door produces only a low sound and is durable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.