Vibratory linear actuator and electric toothbrush using the same
US7495358B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2006 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Apr 26, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K33/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vibratory linear actuator according to one embodiment of the present invention is comprised of a stator having a through hole therein and a winding wire therearound, a movable member having a through hole therein and a member made of a magnetic material, said movable member being provided inside said through hole of said stator, so as to reciprocate in an axis direction upon an application of electric current to said winding wire, a shaft inserted into said through hole of said movable member so as to be movable reciprocally in relation to said movable member, and a coordinating member that enables said shaft to reciprocate in opposite phase to said movable member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.