Abstract: A table-tennis training apparatus for training a player to apply spin to a table-tennis ball when using a racket to hit the ball. The table-tennis training apparatus has a ball holder for rotatably holding a table-tennis ball. When the ball thereon is hit by a racket, the ball holder pivots about an axis and an elastic structure coupled to the ball holder dampens the speed of the ball holder to prolong the contact time between the racket and the ball and consequently help the player to more clearly experience the feeling of applying spin to the ball and thus facilitate the player's training of applying spins to the ball.

Abstract: The present disclosure relates to methods and devices for custom fitting golf clubs to golfers using analysis of golf swing mechanics and data obtained from the golfer being fitted in addition to extrinsic data correlations.

Abstract: A putting alignment system includes a lateral imaging alignment guide having a set of indicia, including an upper indicia, a lower indicia, a right indicia, and a left indicia. The lateral imaging alignment guide has a generally flat body that is configured to removably connect to a golf club shaft. A club lower distal tip reflector is configured for mounting on a distal tip of a golf club. A lateral imaging apparatus includes an imaging system. The imaging system has a main camera. The main camera captures and records motion of the lateral imaging alignment guide. A secondary alignment system includes a forward receiver sensor. The forward receiver sensor detects orientation of the club lower distal tip reflector when the club lower distal tip reflector is facing the forward receiver sensor.

Abstract: Various embodiments for a golf putting training aid having a first stake coupled to a second stake by an upper alignment string and a lower alignment string that collectively establish parallel reference putting lines when the first and second stakes are deployed around a putting surface to train a golfer to properly align their eyes when executing a putt are disclosed.

Abstract: An exerciser includes: sensor installation units provided to be spaced apart from and face each other in a direction parallel; a radiation unit for radiating light, in a first sensor installation unit; a light receiving unit for receiving the light radiated from the radiation unit, in a second sensor installation unit; a speed detection unit for detecting a speed of the golf ball by checking a moment the golf ball passes; a position measurement unit for measuring a position of the golf ball; an operation control unit for performing calculation to detect an initial position value of the golf ball and a moving speed Vb and a moving distance Hb of the golf ball; and a storage unit for storing the measured speed Vb and distance Hb of the golf ball.

Abstract: A swing aid is provided, comprising: a support member, having an elongated shape with a first end and a second end; a first assembly, comprising a first shell and a second shell, the first shell and the second shell being pivotally connected to the first end, the first shell and the second shell being rotatable around the first end to adjust included angles with respect to the support member, respectively; a second assembly, comprising a first indicator and a second indicator, and the first indicator and the second indicator being pivotally connected to the second end, the first indicator and the second indicator being rotatable around the second end to adjust the included angles with respect to the support member, respectively.

Abstract: A device including a golf ball that is configured to be operable for golf hitting practice. A cable assembly retains the golf ball during the golf hitting practice. A golf ball attachment eye segment engages the golf ball. A first compression sleeve is configured to join a portion of said cable assembly that is forming the golf ball attachment eye engaged with the golf ball. A cable eye segment is configured to be operable for engaging a stationary object. And a second compression sleeve is configured to join a portion of said cable assembly that is forming said cable eye.

Abstract: A golf putter grip includes a main body with a generally rounded diamond cross sectional shape and having and integrated green reading and alignment system, wherein the integrated green reading and alignment system includes two break measurement lines, each break measurement line on one side of the grip and configured to assist the golfer in gauging the angle of the flag, and wherein the integrated green reading and alignment system includes at least two alignment lines on a top of the grip and associated with the two break measurement lines and configured to assist in adjusting a club head face of an associated putter based upon the gauged angle of the flag. A golf putter implementing the golf putter grip with a conventional shaft and head with club face is disclosed.

Abstract: In a first aspect, a method for monitoring a golf swing is provided that includes coupling a mobile telephone to a golf club and employing the mobile telephone coupled to the golf club to monitor acceleration of the mobile telephone as the mobile telephone swings while a user swings the golf club, collect acceleration information based on the monitored acceleration of the mobile telephone as the mobile telephone swings, analyze the collected acceleration information to determine one or more characteristics of the golf swing based on the collected acceleration information, and output information regarding the one or more characteristics of the golf swing on the display of the mobile telephone. Numerous other aspects are provided.

Abstract: Disclosed are various embodiments of golf training device that helps a golfer learn and coordinate lower body positions and movements with upper body movements, using a series of feedback signals. In one embodiment, among others, a system comprises a foot sensor that attaches to a Lead Foot of a user. The foot sensor is configured to detect a heel of the Lead Foot being raised. The system also comprises a leg sensor that attaches to a Trail Leg of the user, and the leg sensor detects a bend in the Trail Leg of the user. The foot sensor is configured to detect the heel being lowered at an instance after the detection of the bend in the Trail Leg. The system further comprises a feedback device configured to activate one or more feedback indicators after the detections of foot and/or leg movements.

Abstract: A golf swing training apparatus has a shaft, a housing with a top cap and a bottom cap, and a plurality of weighted discs receivable within the housing. A golfer may adjust the weight of the head of the club by adding or removing weighted discs in the housing. The golf swing training apparatus may comprise an accelerometer within the housing so as to measure the speed, acceleration, and swing path that the club takes for feedback and analysis to improve the golfer's swing.

Abstract: A golf training apparatus device may include a ball plate with golf ball spaced markings on a surface; a ball slide including a channel configured to slideably receive the ball plate as a linear guide and configured to enable linear sliding motion of the ball plate relative to the ball slide; a foot plate; a foot slide including a channel configured to slideably receive the foot plate as a linear guide and configured to enable linear sliding motion of the foot plate relative to the foot slide, the foot slide is rotatably coupled to the ball slide, and may include a telescoping member rotatably coupled to one of the slides, and may further include a swing slide rotatably coupled to a swing plate, where the swing slide may be slidably coupled to the ball or foot plate, and the foot plate may include feet.

Abstract: The present disclosure relates to a portable golf swing plane training device having a base support, alignment rods, and a golf club insert member for receiving a golf club. The golf club, when applied to the golf club insert member, acts as a weight and support member to stabilize and firmly hold the portable golf swing plane training device to a golf playing surface.

Abstract: A swing trainer configured to draw the elbows of the player together by the cocking of the player's wrists. The swing trainer includes arm mounts configured to mount to a player's arms at an intermediate position; and a link with at least a portion connected to the mounts and extending therebetween and arranged such that the portion of the link between the arms is configured to shorten during a swing of a stroke to inhibit splaying of the elbows of the player during the stroke, the link being slidably connected to the one of the mounts so it may slide past. A corresponding method of swing training using said swing trainer is also disclosed.

Abstract: A 3-Dimensional golf game having a horizontal surface, a vertical surface, and a curvilinear surface that interconnects the horizontal and vertical surfaces, wherein at least the vertical surface includes one or more ball-receiving cups. The game of skill is played by one or more players putting or striking a golf ball along the horizontal surface with sufficient force to travel through the curvilinear surface and up the vertical surface. The force of gravity then causes the ball to return back down the vertical surface and—if appropriately aimed and struck—the ball travels downwardly into the opening of the least one ball receiving cup. Players are awarded points for successfully landing the ball into the ball receiving cup and the game may include differently sized and/or positioned cups having different point values.

Abstract: A system that measures a swing of equipment (such as a bat or golf club) with inertial sensors, and analyzes sensor data to create a rotational profile. Swing analysis may use a two-lever model, with a body lever from the center of rotation to the hands, and an equipment lever from the hands to the sweet spot of the equipment. The rotational profile may include graphs of rates of change of the angle of the body lever and of the relative angle between the body lever and the equipment lever, and a graph of the centripetal acceleration of the equipment. These three graphs may provide insight into players' relative performance. The timing and sequencing of swing stages may be analyzed by partitioning the swing into four phases: load, accelerate, peak, and transfer. Swing metrics may be calculated from the centripetal acceleration curve and the equipment/body rotation rate curves.

Abstract: A training apparatus for baseball training includes a base and training attachments that may be attached to the base to allow a user to practice a variety of training techniques. The base may be modular so that it has an adjustable width and disassembles into separate components. At least one training attachment is designed to train a batter to properly incorporate thrust into a swinging motion when swinging a baseball bat. The attachment has a pivotally mounted member with a contact element attached to the top end of the member. The member pivots forward and downward when the user's knee contacts the contact element when properly executing a swinging motion. Thus, the training attachment provides direct and immediate feedback to the user regarding the user's batting form. Other training attachments may be used for hitting balls and for pitching to targets strategically placed around a strike zone.

Abstract: A golf aid for preventing improper wrist bending during a golf stroke. The golf aid provides a wrist wrap with a stabilizer the moves between a retracted position and an extended position spanning the carpal bones, preventing anterior bending of the wrist of a wearer. In the retracted position, the stabilizer is housed in a pocket of the wrist wrap and does not impinge or obstruct the freedom of movement of the wrist.

Abstract: An equipment fitting system that measures swings by a user of different pieces of equipment with inertial sensors, and analyzes sensor data to recommend which piece of equipment is optimal for the user from among those tested. Illustrative applications include fitting of baseball bats and golf clubs. Swing metrics calculated from sensor data may include an acceleration metric, a speed metric, and a momentum metric; these metrics may be combined into a metrics score for each piece of equipment. Other factors may be included in an overall score, such as the user's subjective score for each piece of equipment, and ratings from experts or other consumers. Users may assign the relative importance for the different factors to calculate an overall equipment score.

Abstract: An item holder primarily containing two parts: a ball shaped element and a clip. The clip can be seated neatly into a cutout in the ball shaped element. The clip can also be designed as a divot tool or a spike and contains a clamp that can be used to hold a cigar or cigarette, support a golf club or have other uses. The ball shaped element is sized to fit neatly into the ball bracket on any pull cart or motorized cart equipped with such a bracket.