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.

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.

The present invention relates to a golf club reference system having improved performance in accurate hitting of a golf ball by providing the most ideal, accurate angle of a golf club at a starting point, by matching a lie angle and a socket angle when addressing. The golf club reference system of the present invention installed on a hosel installed on a club head having a hitting surface or a shaft having a handle formed in an upper portion and connected to the hosel in an lower portion, the reference system comprising: a fixing ring surrounding the hosel or the shaft, a fixing screw shaft protruding from the fixing ring in one direction; a fixing nut fixing the fixing screw shaft; a display part connected to the fixing ring through a bridge, and a color crosshair formed on an upper portion of the display part.

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 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.

A golf club head is provided having a club body having a front portion, a rear portion, a toe portion, and a heel portion. The club head also having a central portion connected with the front portion. A frame is connected with the central portion configured to provide a lightweight crown portion being located above an offset plane.

A golf club head is provided having a club body having a front portion, a rear portion, a toe portion, and a heel portion. The club head also having a central portion connected with the front portion. A frame is connected with the central portion configured to provide a lightweight crown portion being located above an offset plane.

A system that wirelessly integrates actual sports equipment with a computer and the internet to allow players remotely located from one another to play a competitive simulated sports game. An individual player may opt to play solo or practice to improve basic techniques. The system includes motion sensors connected to the player and a motion sensing device, all containing circuits and contact or motion sensors coupled with signal processing and radio frequency transmitter circuitry, thereby wirelessly communicate game performance information to a remote receiver-computer. The computer displays player information and visually simulates and controls a game between two players via the internet, having similar equipment and remotely located from each other. Standard sports equipment may be retrofitted with the sensors and associated circuitry to convert such equipment into “smart equipment” for use with the system. The system employs specially developed computer software to process player performance data, control game play, communicate game information between players, generate and control visual simulations and display player performance information.

A golf putting apparatus is presented. The apparatus includes a putter with a shaft and a club head, wherein the club head has a center section carved out to form an opening. The bottom of the opening may be defined by a connector. When used with the opening uncovered, this putter provides the golfer with immediate feedback on his/her swing, such as whether the ball would have contacted the sweet spot of the club had the opening been closed, how hard the ball was hit, and which part of the ball was hit. A club face may be attached across the opening to “close” the opening so the putter may be used in a game.

A golf club fitting apparatus and a method for fitting using the apparatus are provided. The golf club fitting apparatus may be attached to a golf club and provide fitting information including effective lie angle, effective loft angle, stroke plane, and aiming verification information. That golf club fitting apparatus includes a first opening for receiving a shaft, second openings for receiving a collimated light source, third openings for receiving angle indicators, and a recess for securing the collimated light source in an alternate configuration.