Internal weight type vertical vibrator
US7170205B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2004 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Jul 22, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K33/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is an internal weight type vertical vibrator including: a housing; a magnetic circuit unit placed in the internal space of the housing, and comprising a magnet perpendicularly placed and a yoke for fixedly receiving the magnet therein for generating a magnetic field; spring members provided with upper ends fixed to the housing and lower ends fixed to the magnetic circuit unit for vertically; a vibrating unit placed in the yoke so that the outer surface of the vibrating unit is surrounded by the yoke, comprising the weight having a hollow cylindrical structure provided with a central hole, into which the magnet is inserted; and a vibration-generating coil placed just below the magnetic circuit unit so that the vibration-generating coil is interlinked with the magnetic field of the magnet for allowing current supplied from the outside to flow in one direction therethrough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.