Cylindrical linear motor and a vehicle using the same
US7768158B2 · kind B2 · utility
5Cited by
12References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2007 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | Apr 14, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K41/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cylindrical linear motor includes a stator and a movable element disposed via a clearance with respect to the stator and movable rectilinearly with respect to the stator. The movable element has a plurality of permanent magnets fixed to a movable element core. The stator salient poles 3b are pitched at τs and the permanent magnets 11 are pitched at τp so that a relationship of 3/4<τp/τs<3/2 is established.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.