Provided is a digital putting diagnosis device for diagnosing putting, which is provided in a putter head of a golf putter, including: a 9-axis sensor unit for detecting position and movement of the putter head, the 9-axis sensor unit detecting rotation of the putter head in a roll direction, a pitch direction, and a yaw direction; a control unit for controlling the posture of the putter head at the time of addressing the putting and the swing path of the putter head during putting to be displayed in real time by using the detected signal of the 9-axis sensor unit according to the movement of the putter head; and a display unit for displaying the posture of the putter head and the swing path of the putter head under the control of the control unit.

A golf club has a first shaft coupled to a club head, a second shaft configured to slidably engage a portion of the first shaft, a grip coupled to the second shaft, and an adjustable length shaft assembly received by the second shaft and configured to allow a portion of the first shaft to slide in relation to the second shaft in a first configuration, and to restrict a portion of the first shaft from sliding in relation to the second shaft in a second configuration. The grip is restricted from rotation about the first shaft or the second shaft as the first shaft slides in relation to the second shaft.

The disclosure relates to a golf putter head and a golf putter including the putter head. The golf putter head comprises a putter head having a hitting face on which a hitting unit is distributed. The rigidity of the hitting unit is increased from the middle to both sides in the width direction of the hitting face. The golf putter comprises a putter shaft and a putter head coupled to putter shaft.

A golf putting club includes an elongated shaft having a gripped first end, and a putter head attached to the second end. A faceplate is removably secured onto the front end of the putter head. The faceplate is constructed from a material that is tuned to generate a specific note when striking a golf ball. A sound gap for generating and increasing a volume associated with the note the faceplate makes when striking the golf ball is located between the back surface of the faceplate and the front wall of the putter head. The putter includes a plurality of different removable faceplates each being pre-tuned to generate a different specific note when striking a golf ball.

A multi-material golf shaft having a butt portion joined to a tip portion and possessing unique relationships, including rigidity relationships, which provide beneficial performance characteristics including improved stability.

The disclosure relates to a golf putter head and a golf putter including the putter head. The golf putter head comprises a putter head having a hitting face on which a hitting unit is distributed. The rigidity of the hitting unit is increased from the middle to both sides in the width direction of the hitting face. The golf putter comprises a putter shaft and a putter head coupled to putter shaft.

A putter head comprising a novel alignment structure is disclosed herein. In particular, the putter comprises an alignment sphere attached to an upper surface of a lower flange and an alignment ring suspended over the lower flange and vertically aligned with the alignment sphere. When a golfer has oriented the putter properly in front of a golf ball at address, the alignment sphere will appear to the golfer to be encircled by the alignment ring.

An improved putter grip is provided. In one embodiment, the putter grip includes opposing sloped sidewalls, such that the upper portion of the putter grip includes a dual-sided pistol configuration. The sloped sidewalls can be substantially planar, and the putter grip is symmetrical about a plane of symmetry that runs through the grip centerline. The opposing sloped sidewalls can be aligned in the fore-to-aft direction or aligned in the side-to-side direction and may be used by both a left-hand-dominant and a right-hand-dominant golfer without mechanical adjustment. The lower portion of the putter grip is a continuous extension of the upper portion but lacks the taper found in the upper portion of the putter grip. Embodiments also include a putter grip having only a single-sided taper that reduces to a minimum front-to-back width at an intermediate portion of the putter grip, the putter grip being symmetrical about the grip centerline.

Embodiments of golf club heads, golf clubs, and methods to manufacture golf club heads and golf clubs are generally described herein. In one example, a golf club head may include a body portion having an interior cavity and a front portion. A face portion is attached to the front portion of the body portion to enclose the interior cavity. The golf club head may further include a first filler material coupled to a portion of an inner wall of the body portion, and a second filler material between the first filler material and the face portion and coupled to the face portion. The first filler material has a greater coefficient of restitution (COR) than the second filler material, and the second filler material has a greater stiffness than the first filler material. Other examples and embodiments may be described and claimed.

A putter head comprising a novel alignment structure is disclosed herein. In particular, the putter comprises an alignment sphere attached to an upper surface of a lower flange and an alignment ring suspended over the lower flange and vertically aligned with the alignment sphere. When a golfer has oriented the putter properly in front of a golf ball at address, the alignment sphere will appear to the golfer to be encircled by the alignment ring.