Ultrasonic cleaner
US4114194A · kind A · utility
23Cited by
26References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 12, 1977 |
| Grant date | Sep 12, 1978 |
| Priority date | — |
| Expiry date | Aug 12, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L2601/17
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An ultrasonic cleaner for domestic use includes a high-power circuit for driving an ultrasonic transducer and a low-power safety switch which enables the high-power circuit only when a cover is in place over the cleaner. The safety switch is a magnetically actuated reed switch, the contacts of which are closed by a magnet on the cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.