According to one aspect of the present invention there is provided an adjustable mechanism for connecting two or more shafts, including at least a first shaft having an external surface with an outer diameter and a second shaft which is hollow at a first end, wherein a spring is anchored to the first end of the second shaft, the spring having an inner diameter of similar dimensions to the outer diameter of the first shaft, the spring configured such that when a force is applied to the spring its inner diameter is greater than the outer diameter of the first shaft so that the second shaft can move over the first shaft to a desired position relative to the first shaft, and when the force is no longer applied to the spring it is biased to return to its original inner diameter to bear against the external surface of the first shaft.

A retractable bat which comprises an internal structure coupled to a sleeve comprising foam, wherein the sleeve comprising foam surrounds and protects the internal structure, wherein the internal structural member comprises a sleeve rod and an inner rod that may be detachably coupled to movable threads inside the sleeve rod.

An adjustable golf club. The adjustable golf club has a shaft that can selectively secure to a club head. The shaft includes an elongated member which incorporates a first plurality of splines along the elongated member. A club head is removably secured to the shaft by mating the first plurality of splines of the elongated member with a second plurality of splines in an interior cavity of the club head. The angle of the club head can be adjusted through the selective mating of the first plurality of splines of the elongated member to the second plurality of splines of the head. In one embodiment the shaft is further secured to the club head by a quick release system. In another embodiment the length of the shaft can be selectively adjusted.

A golf aide is described for providing tactile feedback to a user during a golf swing. The golf aide has a shaft (12) with a golf grip (11), an arm (14) having a linking element (13) coupling the arm (14) to the shaft (12) at a first end of the arm (14), and a tactile indicator (15) arranged at a distal end of the arm (14) opposite the linking element (13). The tactile indicator has a width greater than a width of the arm and the shaft (12), arm (14) and tactile indicator (15) are fixedly arrangeable such that the distance and angle between a portion of the golf grip to be gripped during a golf stroke and the tactile indicator is equivalent to a predetermined target distance and angle between hands and a lateral upper arm portion of an inside arm of a user at an apex of a backswing of a golf stroke.

A golf club length adjustment device, comprising a first member affixed to a main shaft, the main shaft configured to couple to a golf club head, a second member slideably coupled to the first member, the second member adapted to couple to a golf club grip, wherein the first member is configured to slide along a club axis relative to the second member to change the length of the golf club.

The training system comprises a base assembly, an upright extension, a chin support member, and a putter. In use, the training system positions the user's overall-body prior to and throughout the execution of a putt, and teaches proper putting technique, thus improving the user's putting accuracy. The chin support engages the chin of the user, preventing movement of the user's head.

A golf club length adjustment device, comprising a first member affixed to a main shaft, the main shaft configured to couple to a golf club head, a second member slideably coupled to the first member, the second member adapted to couple to a golf club grip, wherein the first member is configured to slide along a club axis relative to the second member to change the length of the golf club, a backout prevention unit configured to limit the second member from uncoupling from the first member after the golf club length adjustment device has been assembled, a decoupling tool configured to be inserted through an access hole formed in a proximal end of the grip, the decoupling tool configured to engage and deflect the backout prevention unit, disengaging the backout prevention unit from the second member, allowing for disassembly of the second member from the first member.

Examples of a golf club with weight counter balance means are described. The golf club comprises a grip with a weight port and a weight load configured to be removably inserted and secured into the weight port and a club head that has a weight recess and a weight insert configured to be removably inserted and secured into the weight recess. The weight load in the grip and the weight insert in the club head are counterbalanced and predetermined to fit user's parameters such that a same club can be fitted for different user or same user after progressing his/her skills by changing the grip weight and the club head weight.

A snowball launching and batting apparatus comprising a barrel member, a handle member, and a knob feature, the handle member further comprising a primary cradle structure configured to accept, form, and store snow or snowballs. The apparatus further comprises a secondary cradle structure capable of coupling the primary cradle structure and configured to accept, form, and store snow or snowballs. The knob feature may further comprise a depression configured to form snowballs. The apparatus is further configured to have an extended and retracted state. A user inserts snow into the barrel and cradle structure to form a snowball and inserts it into the apparatus while in an extended state. Launching the snowballs from the apparatus may comprise swinging the apparatus or applying a force to the handle member to quickly move it from an extended state to a retracted state.

A ball collection device, including a handle; a first tube segment and a second tube segment coupled substantially perpendicularly to the handle; a multi-directional roller ball coupled to the first and second tube segments; a crossbar coupled to the handle adjacent and substantially parallel to the first and second tube segments; a first arm coupled to and extending substantially perpendicular from the first tube segment; a first wing extending from the first arm that is configured to deflect objects downward; a second arm coupled to and extending substantially perpendicular from the second tube segment; a second wing extending from the second arm that is configured to deflect objects downward; and at least one roller rotatably mounted on each of the first and second tube segments and the crossbar.