A golf club head having elevated internal weighting that improves ball speed, reduces backspin, and increases launch angle is disclosed herein. In particular, the golf club head comprises a hollow body with a face, sole, and elevated weight bar, which is disposed inside the body and is fixed to heel and toe sides of the body, preferably with mechanical fasteners such as screws or bolts. The weight bar bridges a central portion of the sole, and a central section of the weight bar, which preferably comprises at least 50% of the overall mass of the weight bar, extends towards the face without actually making contact with the face. The sole also includes at least one slot extending perpendicular to the face and underneath the central section of the weight bar, the slot having a front-to-back length that is greater than a maximum front-to-back length of the weight bar.

A golf club head has a body defining a crown opening and a sole opening, a forward portion of the crown opening having a lip recessed below an outer surface of the crown and extending rearwardly. A composite crown insert is connected to the lip and covers the crown opening. A ratio of an outer surface area of the body and a combined outer surface area of the crown and sole inserts is less than 0.9. The club head has a crown height as measured relative to a ground plane at address, and there is a first crown height at a face-to-crown transition zone, a second crown height at a crown-to-skirt transition zone, and a maximum crown height that is greater than the first and second crown heights, the maximum crown height being located on the crown insert at or rearward of the lip.

A golf club head has a body defining a crown opening and a sole opening, a forward portion of the crown opening having a lip recessed below an outer surface of the crown and extending rearwardly. A composite crown insert is connected to the lip and covers the crown opening. A ratio of an outer surface area of the body and a combined outer surface area of the crown and sole inserts is less than 0.9. The club head has a crown height as measured relative to a ground plane at address, and there is a first crown height at a face-to-crown transition zone, a second crown height at a crown-to-skirt transition zone, and a maximum crown height that is greater than the first and second crown heights, the maximum crown height being located on the crown insert at or rearward of the lip.

Golf club heads with cavities and inserts, and methods to manufacture golf club heads with cavities. Various embodiments include a golf club head comprising a body. The body comprises a strikeface at a front of the golf club head, a backface opposite the strikeface, a heel region, a toe region opposite the heel region, a sole, a rear portion at a rear of the golf club head, and a cavity located between the backface and the rear portion. In many embodiments, the body further comprises an insert within the cavity.

A golf club head comprising a channel or a pair of parallel rails and a slidable weight assembly that can be removably fixed at any point within the channel or to the rails is disclosed herein. The slidable weight assembly preferably comprises a weight portion and base that can be turned 45 to 90 degrees to reversibly fix the slidable weight assembly within the channel or to the rails.

A golf club head comprising a channel or a pair of parallel rails and a slidable weight assembly that can be removably fixed at any point within the channel or to the rails is disclosed herein. The slidable weight assembly preferably comprises a weight portion and base that can be turned 45 to 90 degrees to reversibly fix the slidable weight assembly within the channel or to the rails.

The current invention aims at improving the playability, durability, and spin generation of different playing rackets, as tennis, squash, and badminton rackets. The method to do so is by applying mechanical forces which generate relative motion of the latitudinal strings over the longitudinal strings. This is done in order to create friction that generate depressions in the contact points of the latitudinal strings with the longitudinal strings. These depressions, made by the described method and machine, induce more friction, and generate spin, while increasing the playability and durability during the play.

A golf club head includes a body having a face plate having a strike surface and an opposing interior surface, a rear end, and a sole connecting the faceplate with the rear end. The face plate, the rear end, and the sole partially define a cavity. An insert is positioned within the cavity, the insert presenting an insert surface facing the interior surface of the face plate and spaced therefrom.

A golf club head includes a body, a recessed channel, and a weight assembly. The weight assembly has a weight, a cover, and a fastener coupling the cover to the body. The cover includes a first end, a second end, and a rabbet extending at least partially between the first end and the second end. The rabbet formed by at least two walls and sized and shaped to at least partially receive the weight and allow the weight to slide therein. One or more of the at least two walls have a retention rib extending therefrom. The retention rib is elongated in a direction between the first end and the second end and discontinuous in the elongated direction. The fastener is configured to move the cover between at least two positions, a first position whereby the weight is selectively slidable and a second position whereby the weight is secured.

A bat extending along an imaginary axis includes a top end, a front segment configured to hit a ball, an intermediate segment, and a rear segment configured to be hold. An annular groove that encircles the axis is disposed between the top end and the front segment or between the front segment and the intermediate segment on a surface of the bat. The groove has an empty space communicating with an exterior.