Vacuum cleaner with filter cleaning
US8695157B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2008 |
| Grant date | Apr 15, 2014 |
| Priority date | — |
| Expiry date | Aug 9, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/16
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vacuum cleaner with a vacuum, a filtering unit, a switching device for switching between a vacuum cleaning and filter cleaning modes, and a separating unit is disclosed. In the vacuum cleaning mode, the vacuum forces a first air stream in a first air stream path through the filtering unit, in a first direction, to filter out dust from the dust laden air stream. In the filter cleaning mode, the vacuum forces a second air stream in a second air stream path through the filtering unit, in a second direction reverse to the first direction, to remove dust from the filtering unit. In the filter cleaning mode, the separating unit is in the air path between the vacuum and the filtering unit to separate dust removed from the filtering unit. In the vacuum cleaning mode, the separating unit is not in an air stream path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.