Electric vacuum cleaner
US8443486B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2008 |
| Grant date | May 21, 2013 |
| Priority date | — |
| Expiry date | Jul 17, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/127
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vacuum cleaner includes an electric air blower; a dust separator placed at an upstream side of the electric air blower and having a filtration filter for taking in dust-containing air sucked by the electric air blower and separating the dust from the air; and a dust accommodating section for accommodating the dust separated by the dust separator. The filtration filter includes a plurality of through-holes penetrating from an upstream surface at an upstream side to a downstream surface at the downstream side, and a central axis of the through-hole is inclined with respect to a normal line direction of a surface of the filtration filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.