Abstract: The golf putter is configured such that the stop step of the rotary linkage is formed outwardly in an extended length to cause the lock screws to stop the rotary linkage from being rotated with a large torque at a position remote from the center of the threaded axle hole, so that when a user does not desire to change the lie angle in use, the adjusted lie angle is not changed for a long period of time.

Abstract: The golf putter is configured such that the stop step of the rotary linkage is formed outwardly in an extended length to cause the lock screws to stop the rotary linkage from being rotated with a large torque at a position remote from the center of the threaded axle hole, so that when a user does not desire to change the lie angle in use, the adjusted lie angle is not changed for a long period of time.

Abstract: Disclosed is a folding golf cart including a front frame having a bag bottom carrier, two rear wheel frames connected to the front frame via connecting bars, vertical pivot frames installed to the rear wheel frames so as to be pivotable upward and toward a front wheel, a bag support frame connected to the vertical pivot frames via pillars, the bag support frame having a bag support member and a pull handle, a longitudinal prop installed between the front frame and the bag support frame, and a transverse prop installed between the rear wheel frames. The golf cart ensures easy folding thereof, takes the form of a small volume box in a folded state thereof, and is convenient in handling owing to a relatively light weight.

Abstract: A golf club head with a shell structure constituting with a body part and a hitting surface (face) incorporates, a groove is formed in the body part near the interface with the hitting surface. Several additional ripples are formed in the inner surface of the face plate. The groove in the body part and ripples of the inner surface of the face plate contributed as a powerful shock absorber but also preventing breakage of the head as well as strong repulsive mechanism improving flying distances.

Abstract: A multi-face putting stroke trainer has multiple striking faces. Each striking face is parallel to the shaft so that any selected striking face is perpendicular to the direction of the stroke. Any of the striking face may be selected for stroke training depending on the skill level for an individual.

Abstract: A putter benefiting from the use of a striking surface which is composed of a flat and a curved face. The faces are connected smooth and piece-wise so that the continuous striking surface is forgiving to putting inconsistencies.

Abstract: An adjustable putter which utilizes a putter head connected to an adjustment means. The adjustment means is connected to a shaft which is in turn connected to a grip. The relationship between the adjustment means and the putter head is maintained such that the lie angle of the putter head, with respect to the shaft, may be confined to certain measurements or restricitons. The putter may be customized to an individual's putting stroke and physical stature. The putter also benefits from the use of a striking face which is composed of two separate radial curvatures. The curvatures are connected smooth and piece-wise so that the continuous striking face is forgiving to putting inconsistencies.