Draw-down cyclonic vaccum cleaner
US5254147A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 18, 1992 |
| Grant date | Oct 19, 1993 |
| Priority date | — |
| Expiry date | Nov 18, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/03
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A cyclonic vacuum cleaner for compacting dirt within a receptacle is disclosed. The vacuum cleaner includes a receptacle having a top side and bottom wall with an air inlet opening in the side wall. A frustoconical air flow structure is disposed within the receptacle to separate air entering the inlet from the top wall. A filter spanning from the side wall to the air flow producing structure is disposed within the receptacle between the air inlet and an outlet disposed within the receptacle between the air inlet and an outlet disposed in the side wall near the bottom wall of the receptacle. The outlet may be connected to a suction source to produce negative pressure within the receptacle so air entering the air inlet downwardly spirals about the air flow producing structure and a particulate within the air flow is removed by the filter. The downwardly spiralling air flow compacts the removed particulate atop the filter to create a further filter effect on the air flow. The air is exhausted from the receptacle through the outlet. The compaction of the removed particulate increases the capacity of the receptacle, and substantially reduces the disturbance of the air flow when the top …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.