A racket dampener swing sensor apparatus to obtain measurements of parameters relative to the player's performance while reducing vibration includes a dampener body having a body front side, a body back side, and a body perimeter. The body perimeter has a string channel to selectively engage a plurality of strings of a tennis racket. The dampener body absorbs vibration from the plurality of strings. An accelerometer and a microcontroller with memory are coupled within the dampener body to measure hit velocity for each shot type (forehand, backhand, serve, topspin, slice, or flat). A vibration sensor is provided to detect when a ball is struck. A transceiver is coupled within the dampener body to wirelessly communicate with an app on a smartphone or computer. A battery is coupled within the dampener body and a charge port is in operational communication with the battery.

An aerodynamic sporting item, such as a tennis racket, is provided. The item includes a plurality of ridges on a surface of the sporting item. The ridges are aligned with a direction of flow of air across the sporting item when used. The ridges define channels between adjacent pairs of ridges and a plurality of dimples are located in the channels defined by the ridges.

A motion sensor package with an elastomer layer that encases the sensor electronics, including the sensors, a processor, an antenna, and a battery. The elastomer layer may provide shock isolation and water resistance to protect the enclosed electronics. Embodiments may also include an outer housing into which the elastomer encased package is installed. The outer housing may for example comprise two cylindrical sections that screw together to close the outer housing. In one or more embodiments part of the outer housing may be integrated into an item of sports equipment. Embodiments for golf may also include a golf club grip adapter that is inserted into the top of a grip, and which attaches to the outer housing containing the elastomer enclosed sensor package.

Method for coupling a sensor to a piece of equipment, such as a golf club, baseball bat, or tennis racket, that ensures that the sensor is in a known position and orientation relative to the equipment. Compensates and calibrates for degrees of freedom introduced in manufacturing and installation. The method may include manufacturing a sensor receiver that aligns with equipment in a fixed orientation, and that holds a sensor housing in a fixed orientation relative to the receiver. Remaining uncertainties in sensor position and orientation may be addressed using post-installation calibration. Calibration may include performing specific calibration movements with the equipment and analyzing the sensor data collected during these calibration movements.

A vibration dampener for a racket includes a strip formed of elastomeric material having a first end part and a second end part, the strip having a first incision at the first end part and a second incision at the second end part, at least one hooking member having a hollow body having a hole into which the first end part is inserted and a hook formed at one side of the hollow body, wherein said at least one hooking member each is combined with the strip by inserting the first end part of the strip into the hole of the hollow body and pulling the elastomeric band until the strip and the hollow body makes a restraining knot.

Provided is an analysis apparatus including an acquisition unit that acquires vibration data showing a vibration generated in a first object by having a second object come into contact with a first position on the first object, a first analysis processing unit that specifies the first position by comparing a vibration characteristic shown by the vibration data, and a vibration characteristic defined for each position where the second object may come into contact with the first object, and a second analysis processing unit that estimates a velocity after the contact of the second object based on a velocity of the first object and the first position.

Provided is an analysis apparatus including an acquisition unit that acquires vibration data showing a vibration generated in a first object by having a second object come into contact with a first position on the first object, a first analysis processing unit that specifies the first position by comparing a vibration characteristic shown by the vibration data, and a vibration characteristic defined for each position where the second object may come into contact with the first object, and a second analysis processing unit that estimates a velocity after the contact of the second object based on a velocity of the first object and the first position.

An eye gaze training device is disclosed, including associated methods to record an impact and to provide a cue or feedback with a proper delay between action and instinctual eye tracking, improve hand-eye coordination, and thereby to improve one's performance in a sport, athletic event, or the like. This training device and associated methods provides for detection, recording, classification, translation, transmission, and learning, all associated with teaching and learning the proper way of striking an object with another object with proper hand-eye coordination. In various embodiments associated systems and methods of the eye gaze training device are included. In at least one embodiment, the eye gaze training device includes a microcontroller, impact sensor, power source, feedbacks, alert device, control settings and switches, accelerometers, position detectors, any one or more of which may be used in an eye gaze training device, as well as additional devices such as headbands, waist devices, leg devices.

An eye gaze training device is disclosed, including associated methods to record an impact and to provide a cue or feedback with a proper delay between action and instinctual eye tracking, improve hand-eye coordination, and thereby to improve one's performance in a sport, athletic event, or the like. This training device and associated methods provides for detection, recording, classification, translation, transmission, and learning, all associated with teaching and learning the proper way of striking an object with another object with proper hand-eye coordination. In various embodiments associated systems and methods of the eye gaze training device are included. In at least one embodiment, the eye gaze training device includes a microcontroller, impact sensor, power source, feedbacks, alert device, control settings and switches, accelerometers, position detectors, any one or more of which may be used in an eye gaze training device, as well as additional devices such as headbands, waist devices, leg devices.

Racket Golf is a golf-style game intended for leisure and friendly competitive play used in common recreational areas such as backyards, parks, beaches, paved surfaces, and within large building spaces. It consists of a Racket Golf club designed to strike a plastic projectile toward a moveable target hole. The Racket Golf club may include string webbing similar in configuration to a tennis or badminton racket. The Racket Golf projectile consists of a ball and tee which in one embodiment are separate pieces and in another embodiment are attached to one another. The tee would serve to hold the striking surface of the projectile above the playing surface, and in the attached version, would also limit the projectile's flight after it had been struck. The target hole is ring-shaped that may include a raised ramp about its circumference. The target hole can be moved about during play to change the difficulty or to adjust the playing par. Alternatively, the target hole can be left in place, but approached from various starting positions to vary the playing course.