Method and apparatus for increasing the air flow into a vacuum cleaner head
US6099661A · kind A · utility
41Cited by
9References
36Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 1, 1999 |
| Grant date | Aug 8, 2000 |
| Priority date | — |
| Expiry date | Jun 1, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/325
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vacuum cleaner head having a dirty air inlet has an associated restricting member which is operable to reduce the size of the dirty air inlet thereby increasing the velocity of the air entering the air flow path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.