A detachable ball inflation and deflation device is disposed in a cavity of a ball. The device includes an air inflation unit, a non-return unit, and a reinforcement sleeve. By applying a force to press the air inflation unit repeatedly, the air outside the ball passes the non-return unit to enter the inside of the ball so as to inflate the ball, and the air filled into the ball won't deflate. The device has the function to deflate the ball in a quick way. When the air inflation unit is pulled out of a portion of the ball, the air inside the ball can be deflated quickly, so that the ball can be carried and stored conveniently.

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 game ball with non-slip layer includes a plurality of f stretchable panels, and marginal edges of the panels connected and sealed together to form a ball surface, and the ball surface having in inflating hole to inflate air into an inflatable bag formed inside the panels; and a non-slip mesh layer covered around an outer surface of the ball surface to provide improved handing and playable characteristics.

A system and method for measuring motion properties of a movable object, such as a sporting device, wherein the movable object has an embedded magnetized unit creating a magnetic field. A measurement device, having a first magnetic field sensor positioned a known distance away from a second magnetic field sensor, is positioned in the vicinity of the movable object's trajectory, whereby the first and second magnetic field sensors output signals when the movable object passes within their respective proximities. A control module, that is responsive to the output signals created by the magnetic field sensors, is configured to record the times of output signal events. The control module is further configured to calculate motion properties, such as the speed and rate of spin, of the movable object based upon the recorded times of various sensor output events and the known distance between the first and second magnetic field sensors.

An apparatus and method of improving hand-eye coordination wherein the present invention includes a throw member that is operable to product a different return trajectory versus a projected trajectory when thrown against a vertical wall. The present invention includes a throw member that is configured to be utilized by a user. The throw member includes a body that is elliptical in shape so as to have circumferential radius that will produce a second trajectory that I s different from that of a first trajectory. The first trajectory occurs when the throw member is hurled at a vertical support surface. Furthermore, the second trajectory is the return trajectory. The method incorporates steps such as but limited to tracking the throw member during its travel on it projected directory and its return trajectory.

This invention provides sports ball having asymmetrical traction and/or asymmetrical surface structure. The asymmetrical traction is useful for differentially controlling ball spin and trajectory height as the ball is projected from a pitching machine. The asymmetrical surface structure is useful for differentially controlling the lateral component of the ball's trajectory. Optionally, the ball is a pitching machine ball. The method also provides a method of projecting the ball from a pitching machine.

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 method and an apparatus for playing golf on a hard surface comprises a replaceable striking pad attached to a conventional golf club head by means of at least one attachment means, a spiked ball, a portable ball trap to trap the spiked ball and an optional remotely controlled vehicle to position the portable ball trap. The replaceable striking pad includes a small lip at a bottom end on a front face and a holding ledge having substantially curved edges extending away from the bottom end of the front face. The holding ledge is adaptable to wrap around a bottom sole of the golf club head. The portable ball trap includes a thin flat platform with tapered edges, a central threaded pole positioned on the thin flat platform and a circular frame having a plurality of hinged tabs threaded to the central threaded pole.

A ball includes a ball body and a light system including integrated infrared (IR) light-emitting-diodes (LEDs). In accordance with a disclosed embodiment, the ball is a football and is adapted for use in conjunction with virtual reality (VR) systems.

A first down indicator assembly includes cart that is rollable along a sideline of an American football field. A pair of laser units is each of the laser units is coupled to the cart. Each of the laser units emits a location beam outwardly onto the American football field. The laser units are spaced 10.0 yards apart from each other thereby facilitating officials to determine when a first down is achieved by a football team. An American football visibly renders the location beam from a respective one of the laser units when a football team achieves the first down. A display unit is coupled to the cart thereby facilitating the display unit to be visible to players on the American football field. The display unit displays a variety of indicia for indicating information relating the American football.