The present disclosure discloses a synthetic shuttlecock, which includes a base portion, a plurality of stems, and a plurality of feathers. One end of each of the stems is inserted into the base portion. Two of the feathers are connected to one of the stems. A connecting portion is formed on the stem, respectively. Each of the feathers has a first length and a first width. Each of the feathers has two holes, the two holes are located on the two sides of the connecting portion respectively, and the holes are close to a front end of the connecting portion. Each of the holes has a second length and a second width. The ratio of the second length to the first length is between 0.22 and 0.31, and the ratio of the second width to the first width is between 0.06 and 0.28.

An improved racquet handle, such as for a tennis or racquetball racquet, comprised of a flex control device that enables a user to adjust the flexibility of the racquet handle. The increased flexibility of the racquet handle enables a user to impart greater force on a ball, such as a tennis ball, and also dampens or reduces the amount of vibration and/or shock otherwise imparted to the racquet user when the racquet strikes the ball. The flex control device of the present invention is comprised of a fixed insert portion and an interchangeable, removable insert that enables a user to control the amount of the flexibility of the racquet.

A pulling string apparatus of a stringing machine comprising a string gripper, a sensor, a drive element, a transmission mechanism and a control circuit; the sensor is connected with the string gripper to detect the pull force of the string gripper; the control circuit compares the detected pull force value with a pre-set value, and control the rotation of the drive element; the transmission mechanism comprises a mounting base, a sliding block, a transmission rack and a drive gear; wherein the drive gear is connected to the drive element and is engaged with the transmission rack, the sliding block arranged on the transmission rack is connected with the sensor; when the sensor and the string gripper are driven forward or backward by the sliding block under the act of the transmission rack engaged with the drive gear, the racket string will be tensioned or loosened.

An artificial shuttlecock feather for implanting in a circular ring shape into a shuttlecock base, including: a vane section and a rachis section having one end in an axial direction of the rachis section fixed to the base and supporting the vane section provided to another end side of the rachis section, a hole being formed in the vane section so as to penetrate the vane section, and a porosity of a first region of the vane section being lower than a porosity of a second region of the vane section, the first region spanning from an edge on the one end side in the axial direction to a predetermined position further toward the one end side than a center of vane section in the axial direction, the second region spanning from the predetermined position to an edge on the other end side in the axial direction.

Described is a sports training system that can be used to assist pitchers in identifying foot placement and mechanics during a pitching motion. The sports training system includes a mat and plurality of foot pads. The mat is designed to have at least a pitching plate and a plurality of grid zones, while the foot pads are used for placement in one or more of the plurality of grid zones to assist the pitcher with foot placement.

A handle for sport equipment comprises a tubular body (7) which extends along a longitudinal axis (L) and has an outer peripheral surface (8) adapted to be grasped by a user and shaped with a plurality of longitudinal faces (9) placed side by side in correspondence of edges (10) adapted to facilitate the positioning of the finger joints of the gripping hand by the user. The edges (10) are arranged along at least one pair of helical or spiral paths that develop around said longitudinal axis (L) with mutually opposite sign to subdivide each of said longitudinal faces (9) into a plurality of areas or flat surfaces (11) sized to accommodate a corresponding phalanx of the gripping hand of the user, each of said areas or flat surfaces (11) being perimetrically delimited by at least one pair of edges (10, 10) of each of the helical or spiral paths.

Embodiments disclosed provide a solution to detect a rally in a sports game. One or more stroke actions or non-stroke actions are detected based on motion data detected by a sensor attached to a sports instrument of a user. Using a trained stroke classification model, each detected stroke action is classified into a plurality of classes. Additionally, a determination is made whether each detected non-stroke action is an intentional special user action. The determination whether a non-stroke action is an intentional special user action is made based on a customized set of definitions defining one or more special user actions. One or more rallies are then detected based on the classified stroke actions and intentional special user actions.

A system for locating an electronic game implement such as an electronic golf ball. The electronic game implement has an outer shell and internal core, with the core containing graphene coated electronics and a battery, wherein the associated electronics of the electronic game implement includes a processor and transceiver configured to measure data including acceleration, speed, travel trajectory and final location while also being configured to transmit the measured data via a communications protocol. The ball or sports game implement that includes the associated electronics are also an embodiment of the invention. The system includes a smart device having associated electronics to communicate with the electronic game implement ball, with the associated electronics of the smart device including a processor configured to receive the measured data from the electronics of the electronic game implement.

An artificial shuttlecock feather for implanting in a circular ring shape into a shuttlecock base, including: a vane section and a rachis section having one end in an axial direction of the rachis section fixed to the base and supporting the vane section provided to another end side of the rachis section, a hole being formed in the vane section so as to penetrate the vane section, and a porosity of a first region of the vane section being lower than a porosity of a second region of the vane section, the first region spanning from an edge on the one end side in the axial direction to a predetermined position further toward the one end side than a center of vane section in the axial direction, the second region spanning from the predetermined position to an edge on the other end side in the axial direction.

The present disclosure discloses a synthetic shuttlecock, which includes a base portion, a plurality of stems, and a plurality of feathers. One end of each of the stems is inserted into the base portion. Two of the feathers are connected to one of the stems. A connecting portion is formed on the stem, respectively. Each of the feathers has a first length and a first width. Each of the feathers has two holes, the two holes are located on the two sides of the connecting portion respectively, and the holes are close to a front end of the connecting portion. Each of the holes has a second length and a second width. The ratio of the second length to the first length is between 0.22 and 0.31, and the ratio of the second width to the first width is between 0.06 and 0.28.