Dust sensing unit for use in vacuum cleaner
US7562414B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2007 |
| Grant date | Jul 21, 2009 |
| Priority date | — |
| Expiry date | Sep 25, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B40/00
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A dust sensing unit for use in a vacuum cleaner, which can detect whether there is dust or dirt on a surface to be cleaned and inform a user of the detected result in cleaning, is disclosed. The dust sensing unit includes a body having an air flowing passage therein to move air laden with dust or dirt drawn in through a suction nozzle, a detecting sensor disposed on the air flowing passage to detect whether the dust or dirt is passing through the air flowing passage, a lamp part to operate according to a signal outputted from the detecting sensor, a rotating part disposed to the body to rotate by air flowing through the air flowing passage, and an electric generator rotated by the rotating part to generate an electric power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.