Filtering system
US7018438B2 · kind B2 · utility
11Cited by
88References
85Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 29, 2002 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | Mar 30, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/1666
- 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, a disposable porous sheet filter layer in the chamber for removing large solid particles from the air, and a disposable noncollapsible filter liner in the chamber and connected to the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.