Vacuum cleaner
US11185199B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2019 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | May 29, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L2201/00
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vacuum cleaner includes a foreign-substance suction unit having a drum brush to suck foreign substances by the suction power rotating on a floor to be cleaned. The drum brush includes a rotary body having a cylindrical drum and foreign-substance collecting grooves formed at opposite end portions of the drum along a circumferential direction; a cleaning member disposed on a circumferential surface of the drum; at least one nozzle spirally extended across the cleaning member along a lengthwise direction of the drum to guide foreign substances toward the foreign-substance collecting groove; and a foreign-substance winding portion disposed in a portion of the foreign-substance collecting groove to wind the guided foreign substances. The drum brush may effectively guide, wind, and cut a hair and the like foreign substances on a carpet and the like bottom, thereby effectively preventing the hair and the like foreign substances from being piled up.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.