An adjustable knob assembly for a ball bat having a tubular handle portion extending about a longitudinal axis. The assembly includes a base and an annular knob. The base includes an end wall and a cylindrical outer wall extending from the end wall. The outer wall is configured to be fixedly coupled to a proximal end of the handle portion of the bat. The outer wall includes a first set of interlocking structure. The annular knob includes an inner radial surface defining a central opening. The inner radial surface includes a second set of interlocking structure. The first and second sets of interlocking structure are positionable between at least a first locked knob position and a second locked knob position.

A golf putter has a hollow shaft that has a longitudinal channel, a grip that surrounds a portion of the shaft, a putter head, and an adjustable counter-balance weight system. The weight system has a rod that has a four-sided configuration and at least one weight. Each weight has an annular weight housing that has a four-sided channel extending longitudinally therethrough, and with each weight housing having a threaded opening. The rod extends through the channel of the weight housing of the at least one weight, and a threaded setting screw is threaded through the threaded opening and impinges on one of the four sides of the rod to secure the weight inside the four-sided channel.

A golf putter has a hollow shaft that has a longitudinal channel, a grip that surrounds a portion of the shaft, a putter head, and an adjustable counter-balance weight system. The weight system has a rod that has a four-sided configuration and at least one weight. Each weight has an annular weight housing that has a four-sided channel extending longitudinally therethrough, and with each weight housing having a threaded opening. The rod extends through the channel of the weight housing of the at least one weight, and a threaded setting screw is threaded through the threaded opening and impinges on one of the four sides of the rod to secure the weight inside the four-sided channel.

The subject disclosure relates to a racket apparatus and method for tuning string tension of the string elements of a racket apparatus. Furthermore, the racket apparatus can be a tunable sport racket in which players can monitor, adjust, and lock a desired string tension without replacing racket strings. In an aspect, the racket apparatus can comprise a throat element through which strings are threaded. Furthermore, the throat element can comprise contact points along an indented track of an outer frame element of the racket apparatus by which a tuning mechanism can be initiated to shift the throat element and adjust a string tension of the racket apparatus.

A training weight for a sport stick is provided. The sport stick includes a housing having a sidewall, a proximal end wall and a distal end wall. The sidewall and proximal end wall include an opening and slot which are sized to accept a sport stick's handle and knob. Preferably, the training weight includes a cup which is biased by a spring to force the sport stick's knob to engage and lock to the training weight's proximal end wall. The training weight may include a cam mechanism to permit the retraction and extension of the spring and cup.

A training weight for a sport stick is provided. The sport stick includes a housing having a sidewall, a proximal end wall and a distal end wall. The sidewall and proximal end wall include an opening and slot which are sized to accept a sport stick's handle and knob. Preferably, the training weight includes a cup which is biased by a spring to force the sport stick's knob to engage and lock to the training weight's proximal end wall. The training weight may include a cam mechanism to permit the retraction and extension of the spring and cup.

Examples of golf club grips and methods to manufacture golf club grips are generally described herein. In one example, a golf club may include a grip portion having at least one weight portion that is positioned outwardly from a shaft axis of the golf club shaft. Other examples and examples may be described and claimed.

Examples of golf club grips and methods to manufacture golf club grips are generally described herein. In one example, a golf club may include a grip portion having at least one weight portion that is positioned outwardly from a shaft axis of the golf club shaft. Other examples and examples may be described and claimed.

A bat handle weight includes a body having a transverse hole with a bat end opening sized to allow a bat handle end to be inserted into the transverse hole. The transverse hole tapers inward at an opposite end from the bat end opening to be narrower than the bat handle end, but wider than the bat handle. The bat handle weight is placed on the bat by placing the bat handle end into the bat end opening, and then rotating the body of the bat handle weight relative to the bat, where the inward tapered portion of the transverse hole bears against the top of the bat handle end, and the user's hand will bear against the outside of the bat handle weight when grasping the bat by the handle, thereby securing the bat handle weight on the bat so that the bat can be swung without the bat handle weight coming off the bat.

A bat handle weight includes a body having a transverse hole with a bat end opening sized to allow a bat handle end to be inserted into the transverse hole. The transverse hole tapers inward at an opposite end from the bat end opening to be narrower than the bat handle end, but wider than the bat handle. The bat handle weight is placed on the bat by placing the bat handle end into the bat end opening, and then rotating the body of the bat handle weight relative to the bat, where the inward tapered portion of the transverse hole bears against the top of the bat handle end, and the user's hand will bear against the outside of the bat handle weight when grasping the bat by the handle, thereby securing the bat handle weight on the bat so that the bat can be swung without the bat handle weight coming off the bat.