Mass-loaded cantilever vibrator
US5245245A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 4, 1992 |
| Grant date | Sep 14, 1993 |
| Priority date | — |
| Expiry date | May 4, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B3/1041
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An electronic device (100) includes a housing (222) and a piezo-bender (400). The piezo-bender (400) includes a metal beam (402) having at least a portion of a surface mechanically coupled to a piezo-ceramic layer (304). The piezo-bender (400) is flexibly coupled to the housing (222) at an end of the metal beam (402) forming a cantilever structure. A vibratable body (404) is mechanically coupled to the other end of the metal beam (402). A tuning slide (604) is slidably coupled to the piezo-bender (400) for mechanically tuning the resonant frequency of vibration of the piezo-bender (400) by varying the length of the piezo-bender (400) that can vibrate. An electrical drive circuit (708) is electrically coupled to the piezo-bender (400) for electrically driving the piezo-bender (400) with a drive signal to generate vibratory motion in the piezo-bender (400) for providing a vibratory alert.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.