Vacuum cleaner
    3.
    发明授权

    公开(公告)号:US10588472B2

    公开(公告)日:2020-03-17

    申请号:US15857357

    申请日:2017-12-28

    IPC分类号: A47L5/30 A47L9/04 A47L7/00

    摘要: Disclosed herein is a vacuum cleaner including a brush to rotate and collect foreign materials on the floor, and a grinder to grind the foreign materials collected through the brush. Since the hair-like foreign materials wound around the brush are grinded and cut by the grinders, a cleaning cycle of the brush can be extended.