Flat vibration generating apparatus
US5793133A · kind A · utility
50Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1995 |
| Grant date | Aug 11, 1998 |
| Priority date | — |
| Expiry date | Sep 13, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K23/54
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A flat vibration generating apparatus wherein a flat coreless eccentric vibrator armature generates an eccentric vibration desired from the aspect of body feel. An air-core armature coil group thereof consists of m pieces (where m is an integer of 3 or more) of armature coils disposed in superposition with one another in m phases in an arrangement such that they are eccentric and with their phases deviated in a circumferential direction, and that they do not describe a complete disc-like shape as viewed from the axial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.