Linear motor
US4217507A · kind A · utility
24Cited by
13References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1979 |
| Grant date | Aug 12, 1980 |
| Priority date | — |
| Expiry date | Jan 8, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/122
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A linear motor construction in which a plurality of parallelpiped shaped permanent magnets are retained within an easily molded spool having an axial bore formed through the axis thereof. A coil which may be electrically excited is wound about the spool and produces a magnetic field when excited, which reacts with the field produced by the permanent magnets to cause linear motion in a ferro-magnetic, cylindrical armature which is slidably contained within the axial bore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.