The present invention relates to sports balls. A sports ball comprises a surface layer comprising a plurality of panels. The sports ball further comprises a lattice structure extending below the surface layer, wherein the lattice structure comprises a plurality of lattice cells comprising radially extending elements. The lattice cells which are adjacent to the surface layer have at least one dimension which is smaller than an average diameter of the panels.

Systems and methods for tracking a sports ball assembly in real time during a sporting event are disclosed. A structure of the sports ball assembly is also disclosed. The sports ball assembly comprises at least one electronic circuit embedded or attached to a sports ball. The sports ball assembly is in network communication with a server processor via at least two receivers within a sports arena. The sports ball assembly generates and transmits UWB data packets comprising movement-related data for the sports ball assembly in real time at a predetermined rate. The at least two receivers receive the UWB data packets and transmit to the server processor with time stamps. The server processor is operable to determine a movement of the sports ball assembly based on the UWB data packets and the time stamps received from the at least two receivers.

Systems and methods for tracking a sports ball assembly in real time during a sporting event are disclosed. A structure of the sports ball assembly is also disclosed. The sports ball assembly comprises at least one electronic circuit embedded or attached to a sports ball. The sports ball assembly is in network communication with a server processor via at least two receivers within a sports arena. The sports ball assembly generates and transmits UWB data packets comprising movement-related data for the sports ball assembly in real time at a predetermined rate. The at least two receivers receive the UWB data packets and transmit to the server processor with time stamps. The server processor is operable to determine a movement of the sports ball assembly based on the UWB data packets and the time stamps received from the at least two receivers.

The present invention relates to a hollowed ball with an erratic movement for pets formed by a single piece, preferably made from an elastic material that allows the erratic movement during a rotation or rebound displacement due to its interior design. The form and dimensions and dimensions of the ball allows the storage of food in its interior, introducing and dosing such food through openings or hollows placed in the external part of the ball. The ball is structurally formed in its interior by at least two cylindrical sections with continuing radially arched thickness with a sequential projection of horizontally cylindrical truncated steps.

The present invention relates to a hollowed ball with an erratic movement for pets formed by a single piece, preferably made from an elastic material that allows the erratic movement during a rotation or rebound displacement due to its interior design. The form and dimensions and dimensions of the ball allows the storage of food in its interior, introducing and dosing such food through openings or hollows placed in the external part of the ball. The ball is structurally formed in its interior by at least two cylindrical sections with continuing radially arched thickness with a sequential projection of horizontally cylindrical truncated steps.

A rubber composition for a hollow ball includes a base rubber, an inorganic filler composed of a large number of flat particles, and a carbon-based filler. As to the carbon-based filler, a degree of flatness DLc obtained by dividing an average particle diameter D.sub.50.sup.c (m) by an average thickness Tc (m) is not less than 50. A weight ratio Mc/Mi is not less than 0.01 and not greater than 1.00. The rubber composition is obtained by a production method including: a first step of mixing the base rubber and the carbon-based filler to obtain a master batch; and a second step of adding the large number of flat particles that form the inorganic filler, to the master batch to orient the large number of flat particles. The hollow ball 2 includes a core 4 formed from the rubber composition.

A rubber composition for a hollow ball includes a base rubber, an inorganic filler composed of a large number of flat particles, and a carbon-based filler. As to the carbon-based filler, a degree of flatness DLc obtained by dividing an average particle diameter D.sub.50.sup.c (m) by an average thickness Tc (m) is not less than 50. A weight ratio Mc/Mi is not less than 0.01 and not greater than 1.00. The rubber composition is obtained by a production method including: a first step of mixing the base rubber and the carbon-based filler to obtain a master batch; and a second step of adding the large number of flat particles that form the inorganic filler, to the master batch to orient the large number of flat particles. The hollow ball 2 includes a core 4 formed from the rubber composition.

A tennis ball may include a spherical hollow elastomeric core having a specific gravity of less than 1 and a thickness of at least 4.5 mm and a textile layer covering the spherical hollow core.

A training/practice/amusement projectile comprises a ball with optimal baffling and rebounding characteristics for play and training of hand-eye coordination and motor skills. The ball generally includes a combination of bounce and baffling elements. In one embodiment the bounce and baffling elements respectively comprise densely packed loops of filament, and individual filament strands of lesser density, both radiating from a core of the ball. A novel method of fabrication includes winding wider and narrower loops of filament, bundling same together at a cinched core, and then cutting the wider loops to form the strands radiating outward inched core to impart a generally spherical outer shape to the ball.

A gravity training ball includes a ball core unit having a predetermined weight specification, a buffer unit covering the ball core unit and made of a material having a shock absorbing effect, and an outer cover unit covering the buffer unit. The ball core unit includes an inner bladder defining a receiving space, and a filler received in the receiving space. The inner bladder has an inflation valve for inflation of air into the receiving space. The buffer unit has a thickness ranging from 2 mm to 30 mm. The ball core unit further includes an inner wrapped yarn layer disposed between the inner bladder and the buffer unit. The outer cover unit includes an outer cover layer covering the buffer unit.