A shock absorbing structure of a racket contains: a head and an absorption member matingly contacting with an internal fence of the head. The absorption member is a hollowly tubular structure and covers the internal fence totally. When the head is made of carbon-fiber composite material, the absorption member is made of any one of Thermoplastic Elastomer (TPE), Thermoplastic Rubber (TPR), rubber, Hydrogel, and Thermoplastic Polyurethane (TPU). When the head is made of metal or aluminum alloy, the absorption member is made of any one of Thermosetting Elastomers, Thermoplastic Elastomer (TPE), Thermoplastic Rubber (TPR), rubber, Hydrogel, and Thermoplastic Polyurethane (TPU). When the head and the absorption member are made of different materials, an amplitude of the head is different from an amplitude of the absorption member, and the head interferes the absorption member, thus absorbing vibration.

A method includes obtaining position information relating to an object in a sporting event, determining, based on the position information, that a start event has occurred, wherein the start event indicates a start of play of the sporting event, and generating, according to a result of the determination, an instruction to start storing position information relating to the object.

A device configured to encourage a tennis player to hit a tennis ball higher over a tennis net includes a pair of telescoping rods. Each pair of telescoping rods can include an inner segment and an outer segment. The outer segment can surround at least a portion of the inner segment. The outer segment can be movable with respect to the lower rod to at least one raised position and at least one lowered position. The lower rod of each telescoping rod can be attached to a vertical support post at opposing ends of a tennis net or directly to the tennis net. At least one fastener can be attached to the outer segment of each pair of telescoping rods. A string can attach the at least one fastener of each telescoping rod. The string can extend above and generally parallel to a top surface of the tennis net.

A rope winding device includes a rope winding seat, a rope reel shaft, a ratchet and a handle. Opposite ends of the rope reel shaft pass through the rope winding seat and are rotatably connected with the rope winding seat. One end of the rope reel shaft is provided with a gear, the ratchet is rotatably mounted on the rope winding seat and meshed with the gear, and the other end of the rope reel shaft is connected with the handle. A rope tensioning device including the rope winding device is provided. A ball net frame including a net and the rope tensioning device is provided. The rope winding device, the rope tensioning device and the ball net frame are detachably assembled, which is convenient for carrying and storing and can realize rapid tensioning of the tension rope.

A mold for manufacturing an artificial shuttlecock from a semi-finished shuttlecock includes a male mold and a female mold. The male mold includes a cone frustum and a plurality of first annular grooves. The semi-finished shuttlecock is placed on an outside of the cone frustum. The first annular grooves are disposed apart on the outside of the cone frustum. The female mold includes a tapered slot, a plurality of second annular grooves and an injection channel. The second annular grooves are disposed apart on an inner surface of the tapered slot. When the semi-finished shuttlecock and the male mold are placed into the female mold, each of the first annular grooves corresponds to each of the second annular grooves to form a plurality of molded grooves. The injection channel communicates with the second annular grooves, and the molded grooves communicate with the injection channel through the second annular grooves.

A special 21-point electronic score device for games like Corn Hole. It is a portable, easy-to-see electronic scoreboard designed specifically for the popular backyard game of cornhole. It is made of durable materials with a fold-in base and includes 42 LEDs (21 on each side) stacked in the traditional score tower style that allows it to be used any time of day or night. It stands approximately fifty (50) inches high when in use and then can fold down to approximately thirty-six (36) inches for easy storage and portability. It has a handle for convenient carrying, a drink holder, and a compartment on top to hold a phone in place for video recording competitive games. The scoreboard can be used for any game played to 21 points.

A racquet includes a handle; and a frame connected to an end of the handle, the frame defining a rounded interior space, the frame including a negative Poisson's ratio (NPR) foam material, in which the NPR foam material, and in which the frame has a Poisson's ratio of between 0 and −1; and a network of strings stretched across the rounded interior space defined by the frame. A golf tee includes an elongated stem; and a head disposed at an end of the elongated stem and shaped to receive a golf ball; in which at least a portion of the golf tee is formed of a negative Poisson's ratio (NPR) foam material, in which the portion of the golf tee 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.

This disclosure relates to a game apparatus including a housing, a motion measurement arrangement and a flexible tether. The motion measurement arrangement is at least partially located within the housing and includes a multi-axis pivot member movable relative to the housing in at least two axes. The motion measurement arrangement also includes a sensor arrangement for measuring multi-axis movement of the pivot member. The flexible tether has a free end coupled to a strikable object and a proximal end coupled to the pivot member. The motion measurement arrangement is configured to measure an indication of one or more parameters of the strikable object's motion upon striking of the strikable object by a user.

The present invention relates to a ball game racket frame with a head portion and a handle portion, wherein the ball game racket frame comprises a fiber composite with at least one multi-fiber roving that is at least partially twisted.

A training bat assembly for improving a user's swing of a baseball bat is provided. In one embodiment, the assembly includes a bat portion and a plug or cap portion, where the plug or cap portion is configured to mate with a distal end of the bat portion. For example, the bat may include a circular opening, and the plug may include a circular rod that is configured to fit within the opening. Alternatively, a cap with a circular opening can be used, where the cap is configured to fit over a distal end of the bat. By mating the plug or cap with the bat, and swinging the bat from a first position to a second position, the plug or cap is propelled from the bat, where the resulting location of the plug or cap can be used to determine the correctness of the user's swing was.