Vacuum cleaner
US10299645B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2017 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Sep 5, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2279/55
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A vacuum cleaner, including a cleaner body; and a dust collector provided in the cleaner body, wherein the dust collector includes a first cyclone provided within an outer case to filter foreign matter and dust from air introduced into the dust collector; a second cyclone accommodated within the first cyclone to separate fine dust from the air introduced into the first cyclone; a screw provided at a lower side of and surrounding the first cyclone, and having at least one vane spirally extended along a flow direction of the air introduced into the outer case to induce the inflow of foreign matter and dust filtered by the first cyclone into a first storage section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.