Piezoelectric vibrating device
US5780958A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1995 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | Nov 3, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/2047
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A piezoelectric vibrating device is disclosed. The device includes a case having a first compartment with a first compartment height. A bender element, fabricated from an piezoelectric material, is disposed within the first compartment. A motion limiter is disposed within the case for preventing damage to the bender. The motion limiter has a first portion that abuts against the case to prevent the first compartment height from compressing beyond a predetermined first compartment minimal height. The device further includes electronic controls for providing a signal to the bender element. The electronic controls further include an optimal wave form signal generator. The wave form may also be a square wave, pulse train, truncated wave or other type of wave depending on each particular application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.