Vacuum cleaning appliances
US4373228A · kind A · utility
321Cited by
11References
8Claims
0Family size
Inventor
Key dates
| Filing date | Apr 15, 1980 |
| Grant date | Feb 15, 1983 |
| Priority date | — |
| Expiry date | Apr 15, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/165
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The invention relates to vacuum cleaning appliances. The appliance of the invention includes a cyclone unit which is operable to extract dust and other dirt from the air flow therethrough and to deposit the extracted dust and other dirt in a chamber outside the cyclone and separate from the air flow through the casing of the appliance. The extracted dirt is removed from the appliance by separation of the cyclone unit from the casing. The appliance is convertible to act both as an upright type cleaner or a cylinder type cleaner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.