Vacuum cleaner filter cleaning mechanisms
US8032984B2 · kind B2 · utility
4Cited by
124References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2007 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | Aug 12, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2273/28
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides a vacuum cleaner having an inlet (26) for dirty air, an outlet (24) for clean air, and a filter (44) located in fluid communication between the inlet and the outlet. A motor drives a fan for moving air into the inlet and through the filter to the outlet. A filter cleaning mechanism for removing dirt from the filter is provided and is operatively associated with an on/off switch for the fan motor or alternatively a separate user-operated switch, whereby operation of the switch results in operation of the filler cleaning mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.