Device for cleaning
US5920954A · kind A · utility
8Cited by
4References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1997 |
| Grant date | Jul 13, 1999 |
| Priority date | — |
| Expiry date | Jul 30, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03C3/017
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vacuum cleaner has a nozzle (N) connected to suction tubing (T) which passes air flow produced by suction from a central unit with a motor pump (M) that sucks air through the nozzle (N) and tubing (T). A portion of the air flow comes from ambient atmosphere (A) through a separate aperature (W) and passes by an ionization electrode (IP) and is directed onto the surface to be cleaned (SC) where dust particles have their electrical charge neutralized by the ionized air flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.