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Ball for ball game and method of manufacturing the same

  • US 9,795,832 B2
  • Filed: 12/14/2010
  • Issued: 10/24/2017
  • Est. Priority Date: 12/14/2009
  • Status: Active Grant
First Claim
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1. A ball for a ball game, the ball comprising:

  • the ball is a spherical body,a spherical core inside the spherical body, the spherical core being a sphere having a center of the spherical body as a center,a spherical cover layer covering the spherical core, the spherical cover layer being a sphere having a center of the spherical body as a center,first and second regions formed on;

    a spherical surface of the spherical core;

    oran inner spherical surface of the spherical cover layer;

    the first regions are formed of a first material, the first material being an electrically conductive material and having a radio wave reflectance, the first regions each having a diameter of not less than 2 mm and not more than 15 mm and the first material being a coating material, andthe second regions are formed of a second material in areas other than where the first regions are formed, the second material being an electrically non-conductive material and having a radio wave reflectance lower than the radio wave reflectance of the first material.

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