Canned linear motor
US6731029B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2002 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Sep 21, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K9/197
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A canned linear motor such that increase of the temperature of the mover is suppressed, the viscous damping force is reduced, and the strength of the can does not deteriorate. A canned linear motor comprises two parts, in one of which a permanent magnet is provided as a field system and in the other of which a three-phase armature winding, a winding fixing frame for supporting the armature winding, a coolant passage through which a coolant for cooling the surface of the armature winding passes, a can (14) covering the armature winding and the coolant passage, and a header (14′) for sealing the can. Slits (151, 152) extending in the direction of travel and parallel to each other are formed in the can (14).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.