Vacuum
US9271620B2 · kind B2 · utility
13Cited by
16References
17Claims
0Family size
Inventors
Key dates
| Filing date | Mar 27, 2012 |
| Grant date | Mar 1, 2016 |
| Priority date | — |
| Expiry date | Nov 18, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/32
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The present invention is directed to a vacuum including a dust extraction system. The system includes a filter assembly, an airflow generation assembly, and valve assembly. The airflow generation assembly is configured to draw contaminated air toward the filter assembly and exhaust filtered air as a discharge stream. The filter assembly is configured to remove contaminants from the contaminated airflow by capturing particulate material suspended within the airflow. The valve assembly is configured to selectively direct filtered airflow into the filter assembly such that the filtered air stream cleans the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.