Stirring device
US5449493A · kind A · utility
29Cited by
11References
22Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 28, 1993 |
| Grant date | Sep 12, 1995 |
| Priority date | — |
| Expiry date | Dec 28, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2035/00534
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Piezoelectric elements are attached to both sides of a flexible metal thin plate, thus forming a bimorph-type piezoelectric vibrator. A portion of the metal thin plate is extended to form a stirring blade. A suitable weight is attached to a part of the metal plate such that the amplitude of the blade is made greater than the amplitude of the vibrator itself. The voltage to be applied to the vibrator and the frequency are adjusted, and the vibrator is vibrated in a second-order mode. Thereby, the entire solution is moved simultaneously, vertical motion is caused, and the stirring efficiency is enhanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.