Connecting tube having dust sensing function for use in vacuum cleaner
US8172932B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2008 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Oct 9, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/34
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A connecting tube having a dust sensing function is provided. The connecting tube includes a tube element having a first air flowing passage; a body having a second air flowing passage to communicate with the first air flowing passage; a detecting sensor disposed on the second air flowing passage to detect whether the dust or dirt passes through the second air flowing passage; a lamp part to operate according to a signal outputted from the detecting sensor; a rotating part rotatably disposed on the body; a rotation driving-passage part disposed on the body to draw in an external air into the second air flowing passage and thus to rotate the rotating part; an electric generator connected to the rotating part to generate an electric power; and a muffler part to reduce noises from the rotating part and the flowing air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.