An apparatus for insertion into an inflatable sports ball, the apparatus comprising a plate comprising a valve wherein the valve comprises an aperture for selective communication of air, a circuit board comprising a transmitter and a battery electrically connected to the circuit board.

A football device includes an outer skin and an inner bladder to be inflatable and substantially resemble and perform like an actual football. The football device includes a sensor unit that can sense various performance metrics and wirelessly communicate data to another device such as a mobile device. To maintain a feel and performance as close to an actual football as possible, a battery powering the sensor unit is wirelessly recharged.

A boxing, kickboxing or martial arts bag such as a slip ball or double end bag including a swivel bearing adjustable strap.

A ball includes a first housing, at least a fixing body, at least a ceramic vibration unit and a second housing. The fixing body is disposed on the internal wall of the first housing. The ceramic vibration unit is configured to make a sound and is fixed on the fixing body. The ceramic vibration unit includes a vibrating plate, a ceramic sheet and a cover body. The ceramic sheet and the cover body are disposed on the vibrating plate, and the ceramic sheet is located between the vibrating plate and the cover body. The second housing covers the first housing.

An American style football including an inflatable bladder, a cover surrounding the bladder, a battery carried by the football, and a light emitter. The light emitter is carried by the football and is electrically connected to the battery. At least a portion of the cover transmits light from the light emitter.

A football device includes an outer skin and an inner bladder to be inflatable and substantially resemble and perform like an actual football. The football device includes a sensor unit that can sense various performance metrics and wirelessly communicate data to another device such as a mobile device. To maintain a feel and performance as close to an actual football as possible, a battery powering the sensor unit is wirelessly recharged.

An inflatable sports ball is provided. The inflatable sports ball having a bladder defining an exterior bladder surface and a bladder circumference. The inflatable sports ball may further comprise a cover disposed about the bladder, the cover comprising an outer cover layer and an intermediate structure. The intermediate structure is disposed between the outer cover layer and the bladder. The intermediate structure comprises a restriction structure. The restriction structure may comprise a plurality of overlapping strips. Each of the overlapping strips is interwoven with each of the other strips and wrapped about the bladder circumference. In this way, the restriction structure comprises a uniform number of radially-stacked layers of the overlapping strips over a substantial entirety of the exterior bladder surface between the exterior bladder surface and the outer cover layer.

A practice ball with an off-axis weight distribution allows sportspeople to practice their ball catching, passing and other skills using a ball that flies through the air with a wobbly trajectory.

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.

A game ball configured for organized, competitive play and having a total mass. The game ball includes an inflatable bladder, a layer of reinforcing material surrounding the bladder, an elastomeric layer surrounding the bladder, and a plurality of cover panels positioned over the layer of reinforcing material and the elastomeric layer. The bladder has a bladder mass that is greater than 25 percent of the total mass. The elastomeric layer and the layer of reinforcing material have a collective mass that is less than 55 percent of the total mass. The game ball is formed without one or more of electronics, batteries and charging coils.