Filter system
US6488744B2 · kind B2 · utility
10Cited by
90References
111Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 19, 2001 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | Mar 19, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/03
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vacuum cleaner having a reduced velocity chamber with a high velocity air inlet, an electric motor, a rotary blade driven by the motor to create a vacuum in the chamber, an outlet for exhausting air from the chamber, which air flows in a selected path from the air inlet, through the chamber and out the air exhaust outlet and a disposable porous sheet filter layer in the chamber for removing large solid particles from the air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.