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    GOLF BALL
    2.
    发明公开
    GOLF BALL 审中-公开

    公开(公告)号：EP4218964A1

    公开(公告)日：2023-08-02

    申请号：EP23151354.0

    申请日：2023-01-12

    申请人： Sumitomo Rubber Industries, Ltd.

    发明人： SAJIMA, Takahiro ,  KOJIMA, Daijiro

    IPC分类号： A63B37/00 ,  A63B47/00 ,  A63B24/00

    摘要： A golf ball 2 having excellent flight performance upon a shot with a utility club is provided. The golf ball 2 has a large number of dimples 8 on a surface thereof. A trajectory of the golf ball 2 calculated under conditions of an initial speed of 260 ft/s, a launch angle of 15.0 degrees, and an initial backspin rate of 3000 rpm satisfies the following mathematical formula,
    Amax ≥ 4.0 * Vave + 13.10 , wherein Amax represents a maximum value (degree) of a vector angle A in the trajectory, and Vave represents an average volume (mm 3 ) of the dimples 8. The vector angle A is calculated by the following mathematical formula. A = ATAN Vy / Vx , wherein Vx represents a horizontal component of a speed of the golf ball 2, and Vy represents a vertical component of the speed of the golf ball 2.

    SPECIAL GOLF MARK BALL FOR HIGH-SPEED CAMERA SENSOR
    7.
    发明公开
    SPECIAL GOLF MARK BALL FOR HIGH-SPEED CAMERA SENSOR 审中-公开

    公开(公告)号：EP3967377A1

    公开(公告)日：2022-03-16

    申请号：EP20923692.6

    申请日：2020-11-25

    申请人： Shenzhen Greenjoy Technology Co., Ltd.

    发明人： WANG, Ji Jun ,  WANG, Qing Hua

    IPC分类号： A63B69/36 ,  A63B37/00 ,  A63B43/00

    摘要： The present application relates to a mark ball special for a golf high-speed camera sensor, comprising a sphere, wherein a mark portion is provided on a surface of the sphere, the mark portion comprises a plurality of marks that are arranged along a circumferential direction of the sphere and shaped different from each other. A plurality of different marks are arranged on a golf mark ball such that a high-speed camera sensor can capture diversified images of the ball, and thus a player can analyze and reference the flight trajectory more accurately and improve his skills on this basis.