Abstract: In an embodiment of the invention, a vibration damping shaft of a cue stick comprises a shaft that is configured to form an axially rigid ensemble by mating with another segment of a cue stick. The shaft includes damping material that reduces the vibration of the shaft when a ball strikes the shaft. The damping material may have a density greater than wood. The damping material may be configured as an annular region in the shaft, or in any other configuration that reduces shaft vibration. Damping materials include composites, such as piezoelectric materials, with fibers that are generally aligned to reduce shaft vibration. Another embodiment of the invention utilizes a universal shaft insert, allowing the shaft to fit another segment of a cue stick having a particular joint pin configuration. Features of the a vibration damping shaft may also be incorporated into a cue stick that is not collapsible.

Abstract: In an embodiment of the invention, a universal shaft fitting for a cue stick comprises a universal adapter with an extension having external threads, adapted to be bonded into the butt end of a shaft of a cue stick, and an insert adapted to be bonded to internal threads of the universal adapter. The insert also includes internal threads for detachably mating a pin attached to another segment of a cue stick. Other embodiments include universal shaft fittings with various pin configurations and universal shaft fittings that do not utilize an insert. The universal shaft fittings may be utilized as components of a kit for adapting shafts to receive segments of cue sticks with various pin configurations. The universal shaft fittings may also be utilized in a method of supplying shafts to fit segments of cue sticks.

Abstract: In an embodiment of the invention, a universal shaft fitting for a cue stick comprises a universal adapter with an extension having external threads, adapted to be bonded into the butt end of a shaft of a cue stick, and an insert adapted to be bonded to internal threads of the universal adapter. The insert also includes internal threads for detachably mating a pin attached to another segment of a cue stick. Other embodiments include universal shaft fittings with various pin configurations and universal shaft fittings that do not utilize an insert. The universal shaft fittings may be utilized as components of a kit for adapting shafts to receive segments of cue sticks with various pin configurations. The universal shaft fittings may also be utilized in a method of supplying shafts to fit segments of cue sticks.

Abstract: In an embodiment of the invention, a vibration damping shaft of a cue stick comprises a shaft that is configured to form an axially rigid ensemble by mating with another segment of a cue stick. The shaft includes damping material that reduces the vibration of the shaft when a ball strikes the shaft. The damping material may have a density greater than wood. The damping material may be configured as an annular region in the shaft, or in any other configuration that reduces shaft vibration. Damping materials include composites, such as piezoelectric materials, with fibers that are generally aligned to reduce shaft vibration. Another embodiment of the invention utilizes a universal shaft insert, allowing the shaft to fit another segment of a cue stick having a particular joint pin configuration. Features of the a vibration damping shaft may also be incorporated into a cue stick that is not collapsible.