A table tennis ball which has, on the spherical surface thereof, a marking to make a ball rotation measurable. The marking contains a number of marking points, which are distributed on the ball surface in such a way that the standard deviation of the lengths of the orthodromes between each of the marking points and the three nearest neighboring points thereof is at least 12% of the average value of these lengths, and the minimum length of the orthodromes between each of the marking points and the three nearest neighboring points thereof is at least 40% of the average value of these lengths.

An illuminated pickleball contains an elongated illuminated element with two opposing ends and comprises a shell that includes a plurality of apertures therethrough, two of which being designated as access aperture. The shell includes two opposing element holders which each include a shank projecting inwardly from the inside surface at one of the access apertures and which are mutually longitudinally aligned through a center point of the shell. Each holder is adapted for receiving the elongated illumination element and for retaining one of the opposing ends of the elongated illumination element by friction. When one end of the illumination element is inserted through an access aperture and then through one of the holders to engage the opposing holder, the opposing end of the elongated illumination element is retained, and the illumination element traverses through the center point of the shell and illuminates the pickleball from within.

The present invention relates generally to a novelty golf ball that has a plurality of internal electrical components capable of storing and playing a sound recording when motion of the novelty golf ball is detected. The body of the novelty golf ball may be of unitary construction or comprised of two separate halves that may be removably attached to one another to allow a user to access the electrical components stored on the interior of the novelty golf ball.

A luminous safety ball including an inner glowing body and a foam sphere covering the inner glowing body is provided. The inner glowing body is not a perfect sphere, the foam sphere has a non-uniform thickness, and light emitted by the inner glowing body passes through the foam sphere and permeates through a surface of the foam sphere to form light with different brightness thereon.

The present disclosure provides a stress-relief folding ball, including a folding ball main body capable of extending and shrinking, wherein the folding ball main body includes a folding matrix, folding lines, folding walls, pressing spherical surfaces and an accommodating cavity; the folding matrix is arranged in a middle of the folding ball main body, the folding lines and the folding walls are arranged at left and right sides of the folding matrix, the folding lines and the folding walls are alternately connected, the pressing spherical surfaces are arranged at left and right ends of the folding ball main body. The folding ball main body provided by the present disclosure is an integrally formed structure and not easy to be damaged, thereby reducing the purchasing cost. The selected material is the non-metal elastic material, which may increase the comfort and enjoyment during use.

A training system includes apparel and balls that fasten to the apparel. The apparel includes patches or strips of hook/loop fastener material that couples to strips of the hook/loop fastener material on the balls. The balls are removed during training by an opponent. The balls are placed on the apparel to emphasize training to that region.

In the process of making a hollow product, especially a deformable toy ball, two halves made from an elastomeric material, a thermoplastic material, rubber, a blend of rubbers, or a thermoplastic elastomer are formed by injection molding with mating edges that engage with each other when the halves are assembled to form the product. The edge of one of the two halves is advantageously formed with a recess centered in the edge, in which a flange formed on the edge of the other of the two halves engages to provide a form-fitting connection between the two halves. The opposing edges are then bonded with each other by fusion or melting or by an adhesive applied to at least one of the edges prior to assembling the halves together. A deformable ball produced by the process is also described.

A ball toss and retrieval toy provides for entertainment and exercise by children. The toy takes the form of a bat and has an open end for tossing the ball from the toy. The toy also has a cord and reel mechanism that attaches the ball to the bat, allowing for retrieval of the ball from a fixed position. The reel mechanism includes a release mechanism that allows the cord to play out as the toy is operated in a toss operation similar to a fishing casting operation. The ball can then be reeled in by the reel mechanism, which may include a mechanical crank or may be motorized.

A plastic ball having a generally spherical shape with a plurality of depressions located in only one hemisphere of the ball and lying along circumferences of the ball that pass through the center of the hemisphere, in which the depressions are equally spaced radially about the center of the hemisphere.

A hollow plastic ball includes two semi-spherical shells combined together. Each of the two semi-spherical shells has a surface provided with a plurality of holes and has an inner circumferential face provided with a horizontal rib and a semi-circular vertical rib. Thus, each of the two semi-spherical shells is provided with the horizontal rib and the semi-circular vertical rib, so that the hollow plastic ball will not move or sway freely during flight. In addition, the horizontal rib and the vertical rib of each of the two semi-spherical shells reinforce the structural strength of the hollow plastic ball to prevent the hollow plastic ball from being deformed.