The present disclosure relates to a putting practice device for developing a putting motion for accurately striking a golf ball to a target spot, wherein the putting practice device can be used irrespective of a trajectory and curvature formed by a putter head when striking the golf ball. In addition, the present disclosure includes an auxiliary fastening unit for fastening the putter head to a mounting part.

A shaft for a golf club includes a first end, a second end, and a demarcation. The first end is adapted to attach to a club head. The second end is adapted to receive a grip distal to the first end. The demarcation is positioned at or adjacent to the balance point of the golf club between the first end and the second end.

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.

A golfing apparatus for assisting a golfer in putting includes a guide member adapted to encourage only certain motions during the golf swing to improve the engagement of ball with club and subsequently improve ball control, trajectory and speed. Further the golfing apparatus includes a movable member configured to slide along a path defined by the guide member and coupled with the putter handle. The guide member is affixed to the waist of a golfer. The guide member is curved to follow a natural rotation of arms and shoulders of the golfer and can be adjusted for proper angle that best fits a golfer's stance and has a second planar back stop surface to further align and control the movement of the putter club head, thereby assisting the golfer in putting.

A golf club comprising a golf club head having a face wall, an inertial motion unit (IMU) positioned within the body, and a transceiver in communication with the IMU, a shaft attached to the golf club head, and a grip attached to the shaft is disclosed herein. The IMU identifies an impact location with a golf ball.

A putter assembly, configured to facilitate improved alignment by enabling the face angle of the putter to be properly aligned with the hole, including: (a) an elongated shaft; (b) a putter head; (c) a grip; (d) an image sensor, wherein the image sensor is associated with at least one of the putter head and the elongated shaft; (e) a display, wherein the display is in communication with the image sensor; and (f) an energy source, wherein the energy source is in electrical communication with the image sensor and the display.

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.

The present disclosure relates to systems and methods for balance index determination. For example, a wearable apparatus may have at least one gyroscope configured to measure angular velocity about a first axis; at least one inertial measurement device (IMU) configured to measure deviation along a second axis and a third axis; at least one memory storing instructions; and at least one processor configured to execute the instructions to: receive angular velocity measurements over a period of time from the at least one gyroscope; receive deviations from the second axis and from the third axis over the period of time from the at least one IMU; weight the deviations based on directions associated with the deviations; and generate a composite balance index based on the angular velocity measurements, the weighted deviations from the second axis, and the weighted deviations from the third axis.

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.

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.