Electric motor adapted to permit translational motion between field and armature
US4556828A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 2, 1983 |
| Grant date | Dec 3, 1985 |
| Priority date | — |
| Expiry date | Nov 2, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A DC motor particularly adapted to operate in the presence of translational movement between the armature (rotor) and the field (stator) magnets. The field magnets comprise a plurality of magnets formed into a pair of concentric, closed-spaced, parallel rings mounted to rings of soft, magnetic material. The armature is a planar armature wound in a serpentine pattern so as to cross back and form between the rings only on radial lines from a center point on the armature. The radial conductor lines are sized with respect to the width of the magnetic ring such that even in the presence of translational motion, only the radial conductors cross between the rings and the motor can continue to operate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.