Blower
    3.
    发明授权
    Blower 有权

    公开(公告)号:US12215716B2

    公开(公告)日:2025-02-04

    申请号:US18618349

    申请日:2024-03-27

    Abstract: Blowers, e.g., for use in outdoor applications, are provided. A blower includes an air inlet; an air outlet; and a fan assembly disposed between the air inlet and the air outlet. The fan assembly has a three-stage fan. The three-stage fan includes three axial fans mounted on a drive shaft and three stator fans arranged in series with the axial fans, wherein each axial fan comprises a plurality of blades each having a blade tip. The three-stage fan has a dimensionless flow coefficient Φ in a range from about 0.3 to 0.5 as calculated by the equation Φ=(q/(A))/ωR where q represents flow (m3/s), A represents cross sectional area at the fan (m2), ω represents speed (rad/s) and R represents fan tip radius (m) measured at a blade tip.

    OUTDOOR TOOL AND BLADE
    4.
    发明公开

    公开(公告)号:US20240357970A1

    公开(公告)日:2024-10-31

    申请号:US18645692

    申请日:2024-04-25

    CPC classification number: A01G3/062

    Abstract: Outdoor tools such as a rotary cutter, and blades for a rotary cutter, are provided. A blade includes a body having a first side and a second side both extending from a first end to a second end of the body, a first edge and a second edge extending along a length of the body between the first side and the second side from the first end to the second end. The body includes a first arm, a second arm, and a planar portion between the first arm and the second arm. The blade is configured to rotate about a rotational axis that extends through the planar portion. The body further includes a hole surrounding the rotational axis. Each of the first arm and the second arm includes at least one bend. The body is symmetrical about at least one axis of symmetry.

    BLOWER
    5.
    发明公开
    BLOWER 审中-公开

    公开(公告)号:US20240328434A1

    公开(公告)日:2024-10-03

    申请号:US18618349

    申请日:2024-03-27

    CPC classification number: F04D29/667 F04D19/002 F04D29/384 F05D2240/307

    Abstract: Blowers, e.g., for use in outdoor applications, are provided. A blower includes an air inlet; an air outlet; and a fan assembly disposed between the air inlet and the air outlet. The fan assembly has a three-stage fan. The three-stage fan includes three axial fans mounted on a drive shaft and three stator fans arranged in series with the axial fans, wherein each axial fan comprises a plurality of blades each having a blade tip. The three-stage fan has a dimensionless flow coefficient Φ in a range from about 0.3 to 0.5 as calculated by the equation Φ=(q/(A))/ωR where q represents flow (m3/s), A represents cross sectional area at the fan (m2), ω represents speed (rad/s) and R represents fan tip radius (m) measured at a blade tip.

Patent Agency Ranking