Multi-layered, golf balls having a core made of a foamed composition are provided. The core preferably has a foam inner core (center) and surrounding thermoset or thermoplastic outer core layer. The core also includes a structural insert such as, for example, a solid shell, perforated shell, a lattice or mesh, or a central hub with extending arms, and the like. The core layers have different hardness gradients and specific gravity values. The ball further includes a cover having at least one layer. By adjusting the respective specific gravity values of the core layers, the Moment of Inertia (MOI) of the ball can be increased or decreased. In one embodiment, the ball has generally good flight distance and low spin rate.

A water-ball toy with a high playability comprises a central body made of sponge, and an outer shell continuously formed around the central body; the central body has a maximum outer perimeter width around the outer perimeter thereof; the outer shell comprises an inner wall surface and an outer wall surface, the inner wall surface defining an inner cavity having a minimum inner cavity diameter around the inner wall surface, the inner cavity diameter is not less than the outer perimeter width; the outer wall surface has at least a portion of a spherical surface, the outer wall surface further has a plurality of through holes formed therein, there is a wall thickness between the outer wall surface and the inner wall surface; the plurality of through holes extend through the wall thickness and define passages for water to enter and exit from the inner cavity through the through holes.

In an aspect, a sports ball includes a core including a negative Poisson's ratio (NPR) foam material, in which the core has a Poisson's ratio of between 0 and 1, and in which the NPR foam material includes an NPR polymer foam; and a cover layer surrounding the core. In an aspect, a golf club includes an elongated shaft; a grip disposed at a first end of the elongated shaft; and a head connected to a second end of the elongated shaft, the head having a flat face configured for contact with a golf ball, in which the flat face is formed of a negative Poisson's ratio (NPR) foam material, in which the head has a Poisson's ratio of between 0 and 1, and in which the NPR foam material includes an NPR metal foam, an NPR ceramic foam, or an NPR-PPR composite foam.

Multi-layered, golf balls having a core made of a foamed composition are provided. The core preferably has a foam inner core (center) and surrounding thermoset or thermoplastic outer core layer. The core also includes a structural insert such as, for example, a solid shell, perforated shell, a lattice or mesh, or a central hub with extending arms, and the like. The core layers have different hardness gradients and specific gravity values. The ball further includes a cover having at least one layer. By adjusting the respective specific gravity values of the core layers, the Moment of Inertia (MOI) of the ball can be increased or decreased. In one embodiment, the ball has generally good flight distance and low spin rate.

Multi-piece golf balls containing a dual-core structure are provided. The core structure includes an inner core (center) comprising a foam composition, preferably foamed polyurethane. The outer core layer is preferably formed from a non-foamed thermoset composition such as polybutadiene rubber. The inner and outer core layers can have different hardness gradients. Preferably, the specific gravity (density) of the foam inner core is less than the density of the outer core layer. The ball further includes a cover of at least one layer and may include at least one casing layer. The core structure and resulting ball have relatively good resiliency.

An exercise game piece includes a body with opposite base ends shaped to permit the game piece to stand. An intermediate section divides the body between a first section and a second section. The intermediate section is smaller in dimension than each of the opposite base ends. Indicia distinguishes the first section from the second section. The game piece can be used as part of a kit and to play a variety of games.

The invention provides a golf ball having a core and a cover of one or more layer encasing the core, wherein the core is formed of a rubber composition that includes a base rubber, a co-crosslinking agent and an organic peroxide. The core has a center portion and a surface portion that are unfoamed regions, and has an intermediate portion that contains a foamed region. A method of manufacturing such a golf ball is also provided.

Large diameter golf balls having at least one foamed intermediate layer are provided.

Multi-piece golf balls containing a dual-core structure are provided. The core structure includes an inner core (center) comprising a foam composition, preferably foamed polyurethane. The outer core layer is preferably formed from a non-foamed thermoset composition such as polybutadiene rubber. The inner and outer core layers can have different hardness gradients. Preferably, the specific gravity (density) of the foam inner core is less than the density of the outer core layer. The ball further includes a cover of at least one layer and may include at least one casing layer. The core structure and resulting ball have relatively good resiliency.

A sports implement for obtaining autographs, having a core, a hole in the core having an open end and a closed bottom end, a housing disposed within the hole further comprising a latch, a spring, and a stop rim. The implement further includes a cap rotatably and slidably disposed within the housing comprising a first position wherein the cap compresses the spring toward the closed bottom end and a second position wherein the spring urges the cap against the stop rim, and a writing utensil removably coupled with the cap and rotationally coupled with the housing, further comprising a striker selectively interfacing with the latch.