GAME BALL

• US 20090111619A1
• Filed: 08/21/2008
• Published: 04/30/2009
• Est. Priority Date: 10/31/2007
• Status: Active Grant

• Current Assignee: Tokyo Denki University
• Original Assignee: Tokyo Denki University
• Inventors: Kobayashi, Takehiko, Yamamoto, Hironobu, Nishide, Takehiko
• Granted Patent: US 7,976,416 B2
• Time in Patent Office: Days
• US Class Current: 473/569
• CPC Class Codes: A63B 43/00 Balls with special arrangements
• CPC Class Codes: A63B 43/004 electrically conductive, e.g. for automatic arbitration
• CPC Class Codes: A63B 43/008 with means for improving visibility, e.g. special markings or colours illuminating or reflecting means A63B43/06
• CPC Class Codes: A63B 43/06 with illuminating devices ; with reflective surfaces

Abstract

The invention provides a game ball, useful for children'"'"'s safety, which can be detected far enough away a distance by a vehicle-onboard radar. The invention provides a game ball wherein a reflector member 12 is disposed within a spherical shell 13, the diagonal distance of the reflector member coincides with the inner diameter of the spherical shell, the reflector member has a shape constructed by combining three regular polygon plates 11A, 11B, 11C, the center angle of one side thereof being an integral submultiple of 90°, in such a manner that the centers of the three regular polygon plates are coincident and that the three regular polygon plates are perpendicular to each other, and a surface of said reflector member 12 is imparted with electromagnetic wave reflectivity.

Claims

1. A game ball, wherein a reflector member is disposed within a spherical shell, the reflector member has a shape constructed by combining three regular polygon plates or circular plates of identical size, the center angle of one side of the three regular polygon plates being an integral submultiple of 90°

, in such a manner that the centers of the three regular polygon plates or circular plates are coincident and that the three regular polygon plates or circular plates are perpendicular to each other, and a surface of the reflector member is imparted with electromagnetic wave reflectivity.

2. The game ball according to claim 1, wherein the reflector member is a conductor, a substrate which has a surface covered by a conductor, or a conductive net having apertures not greater than 0.5 mm.

3. The game ball according to claim 1, wherein the spherical shell and the reflector member are made of a rubber pliable material.

4. A game ball, wherein octant sections are obtained by forming a bisection of a sphere along a horizontal direction in the center of the sphere, and forming a quadrisection of the hemispheres along a vertical direction, a conductive cover is applied to each of three division surfaces on an outer surface excluding a spherical surface of the octant sections, the eight octant sections are combined into the sphere, and the sections are bonded together.

5. The game ball according to claim 4, wherein the sphere is made of a rubber pliable material.