Multi-frequency ultrasonic cleaning method and apparatus
US5076854A · kind A · utility
18Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1989 |
| Grant date | Dec 31, 1991 |
| Priority date | — |
| Expiry date | Nov 13, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B2201/71
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
When output signals of different multi-frequencies are supplied to one vibrator every short time interval, ultrasonic waves generating from the vibrator having continuing frequencies in which frequencies between separated resonance frequencies are supplemented. Therefore, the cleaning effect is improved by the ultrasonic waves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.