Linear motor and linear guiding apparatus
US6977450B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2004 |
| Grant date | Dec 20, 2005 |
| Priority date | — |
| Expiry date | Jan 21, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23Q5/28
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A linear motor is provided that includes a rod-like member having a cylindrical body made of a non-magnetic material and a plurality of plate-like segment magnets accommodated in the cylindrical body such that they are stacked in a longitudinal axial direction of the cylindrical body and a coil member having a polyphase coil. The rod-like member is arranged to extend through a center bore of the coil member. The rod-like member of the linear motor comprises the cylindrical body having a substantially oval or substantially rectangular section and the plurality of segment magnets having a substantially oval or substantially rectangular plate shape that are accommodated in the cylindrical body and stacked in the axial direction of the cylindrical body. The section of the center bore of the coil member is substantially oval or substantially rectangular corresponding to the shape of the section of the rod-like member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.