Methods and apparatus for causing wireless communication devices to vibrate via piezo-ceramic vibrators
US6389302B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1999 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Apr 28, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M19/047
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A miniaturized piezo-ceramic member is positioned in a radiotelephone or wireless communication device to relatively rapidly deflect in a first direction and a second direction. The piezo-ceramic member contacts and forces a component of the radiotelephone or device having a sufficient mass to translate in the first and second direction in response to the deflection or movement of the piezo-ceramic member thereby generating a vibrating or shaking motion for the radiotelephone or device which is detectable by a user. In a preferred embodiment the component is a battery having a mass which is at least about 10% the mass of the device or radiotelelphone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.