Vacuum cleaner
US7698777B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2006 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | Aug 16, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/2842
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vacuum cleaner includes an electric blower, an electric blower controller for controlling the electric blower, an electric blower current detector for detecting at least a current flowing in the electric blower, and a dust chamber provided at an upstream of the electric blower, for collecting dust particles sucked by the electric blower. A predetermined level of a current is made to flow in the electric blower regardless of a dust particle amount in the dust chamber. Preferably, the vacuum cleaner further includes voltage detector for detecting a voltage of a power supply applied to the vacuum cleaner. More preferably, the vacuum cleaner further includes a frequency detector for detecting a frequency of a power supply applied to the vacuum cleaner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.