Piezoelectric switch apparatus for a communication device
US5977690A · kind A · utility
10Cited by
9References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1997 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Aug 25, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/9643
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A control switch for a radio is formed using an electro-mechanical assembly (400) which includes an array of cantilevered beams (402) laminated with piezoelectric film. A movable surface (404) includes protrusions (406) positioned to deflect the cantilevered beams and generate pulsed signals in a coded manner. Electronic circuitry (410) stores the pulsed signals and associates the signals with a position of the switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.