US 8,801,553 B2Granted

Sports ball

AssigneeMikasa Corporation

InventorsTakashi Fujikura, Osamu Kobayashi, Shuzo Matsuno

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Abstract

There is provided a sports ball capable of relieving the pain of the hands suffered from impact on the ball and having a soft feel and high flexibility. The sports ball comprises a spherical hollow rubber bladder (2) inflated with air injected into it, a fabric tape reinforcement layer (3) formed by winding a narrow adhesive-impregnated fabric tape (7) around a central spherical portion (6) of the rubber bladder about each of three axes of the rubber bladder with the exception of opposite spherical end portions (5) of the rubber bladder, whereby the fabric tape reinforcement layer is formed as orthogonal lap windings of the fabric tape over substantially all of the spherical surface of the rubber bladder, to provide a fabric tape wound ball core, and surface panels (4) adhered with adhesive to the fabric tape reinforcement layer on the rubber bladder, after vulcanization and forming of the fabric tape wound ball core.

Claims3

Dependent claims

A sports ball, comprising:

a spherical hollow rubber bladder inflated with air injected into it, and
about each of three axes of the spherical rubber bladder, a narrow adhesive-impregnated fabric tape wound around a central spherical portion of the rubber bladder, with the exception of opposite end portions of the rubber bladder to form a fabric tape reinforcement layer, wherein:
the fabric tape reinforcement layer consists of three mutually orthogonal lap windings of the fabric tape to provide a fabric tape wound ball core,
in each one of the three fabric tape lap windings, each of the adjacent lap portions of the wound fabric tape has its edge positioned to be parallel to an edge of its adjacent lap portion, and
in each one of the three fabric tape lap windings, each of the adjacent lap portions of the wound fabric tape has its edge positioned to overlap its adjacent lap portion at all points by one-half of a width of the fabric tape,
such that the mutually orthogonal lap windings around the central spherical portion of the rubber bladder with the exception of opposite end portions of the rubber bladder form four layers of fabric tape over substantially all of the spherical surface of the rubber bladder.

3 more elements

Dependencies are inferred from the claim text.