Vibrator
US4950931A · kind A · utility
15Cited by
0References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1989 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | Jan 17, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K33/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vibrator (2) comprising: PA0 a massive, magnetic member (16) arranged for movement about a reference position; and PA0 electromagnetic actuator means (12) for causing said member to move; and PA0 magnetic suspension means (8, 10) arranged on either side of said member for suspending said member therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.