Abstract: A fastening device for cooperating with a shaft, wherein the fastening device includes: a deformable sleeve, and a locking collar, the deformable sleeve is configured to have a perimeter relative to the shaft such that the deformable sleeve can be pushed over the shaft, and the locking collar is configured to push over the sleeve so as to bear against a surface of the sleeve and to cause the fastening device to engage with the shaft.

Abstract: A clamping mechanism including: a deformable body configured to provide a friction fit with at least one element to which it is fitted, at least one slot in the deformable body, wherein the slot traverses at least a portion of the longitudinal and latitudinal direction of the body.

Abstract: A fastening mechanism including a shaft, wherein the shaft is effectively threaded; the shaft includes a threaded non-deformable material interspersed with at least one portion of a threaded deformable material.

Abstract: An adjustable mechanism including at least two shafts, one of which is hollow, including: a spring attached to a first shaft; the spring having an outer diameter of similar dimensions to the internal diameter of the second shaft, the spring configured such that once force is applied to the spring, its outer diameter is less than the inner diameter of the second shaft; and when force is no longer applied to the spring it is biased to return to its original outer diameter to bear against the inner diameter of the second shaft.

Abstract: A securing apparatus, including: a deformable body, wherein the body is configured to provide a secure interference fit with at least one article to which it is fitted, and an aperture within the body, wherein the aperture is configured to accept a noncircular section of a releasing tool, wherein the securing apparatus is only unlocked by the operation of the releasing tool with respect to the body and is locked at all other times upon removal of the releasing tool.

Abstract: An adjustable length golf putter, including at least one shaft, at least one grip attached to the at least one shaft, a self-locking mechanism associated with the putter for lengthwise adjustment of the at least one shaft relative to the at least one grip, the mechanism configured for accommodating an adjustment tool, and being locked by default so that the tool must be engaged in the mechanism for the lengthwise adjustment.

Abstract: A putter, adjustable in length to suit the golfer's stature and preferred posture, which utilises a self locking design to secure the putter, and necessitates a tool to adjust the length of the putter.

Abstract: A long putter with a single long putter grip, greater than 35 cm in length, where the grip may have a reverse taper an be circular or non circular in cross section, and may be grasped with an inter-woven finger gripping technique. The putter may be used in a simple pendulum type putting stroke, with minimal wrist flexure. With this method of putting the top of the putter makes contact with the sternum depression, thereby stabilizing the top of the putter against the body, and both hands grasp the lower portion of the grip, the hands being in direct or indirect contact with each other. To strike the ball, the golfer rotates the triangular unit of arms and shoulders, together with the putter, about an axis point which would be near his/her spinal column, and behind his/her sternum depression.