Ultrasonic dishwasher system
US5218980A · kind A · utility
Inventor
Key dates
| Filing date | Oct 10, 1991 |
| Grant date | Jun 15, 1993 |
| Priority date | — |
| Expiry date | Oct 10, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L2601/17
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An improved dishwasher system utilizes ultrasonic signals to clean a wide range of kitchen and/or dining ware items. The system includes one or more ultrasonic signal generators submerged within a water bath and regulated by a controller to generate an ultrasonic signal, resulting in the production of a large quantity of cavitation bubbles which implode with a vigorous cleaning action against submerged kitchen ware items. The controller rapidly varies the specific frequency of the generated ultrasonic signal, preferably in conjunction with a rapid on-off pulse cycling of the signal, to prevent damage to or breakage of fragile ware items.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.