Butt extender having a cushion-receiving cavity for a pool cue

A pool cue in combination with an extender having a rearward and a forward end, which extender is adapted to fit over the butt end cushion of a pool cue for user adaptability for playing the game of pool, said extender comprising;

• a forward facing threaded stub shaft extending out of and away from a concave cavity located in said forward end of said pool cue extender, which cavity surrounds said threaded stub shaft;
• said cavity defined by an upstanding wall at said forward face with a depth dimension adapted to receive and house said butt end cushion of said cue within said cavity;
• a mating bore positioned through said base cushion and into a butt end of a pool cue, which bore has internal threads that align and mate with the threads on said threaded stub shaft such that said extender may be secured to and/or manually removed from the butt end of said pool cue;
• weight means which may be selectively housed in said cavity for varying the weight of an extended pool cue equipped with said extender;
• and
• a second cushion fastened at the rearward end of said extender, which second cushion also has a bore therethrough for receiving a threaded stub shaft of another extender, which other extender also has a second cavity surrounding another second threaded stub shaft for housing, receiving and concealing said second cushion.

A method of adding to a pool cue optional cue weights, if any, and an extender, which extender has a rearward and forward end, with the forward end adapted to fit over the butt end of a bored-through cushion of said pool cue for user adaptability for playing the game of pool, said method comprising;

• locating a cavity in the forward end of said pool cue extender by a cylindrical upstanding wall of the extender;
• installing a forward facing stub shaft in the facing end of an extender, which shaft extends out of and away from said cavity,
• surrounding the stub shaft by an empty donut-shaped space between said shaft and the upstanding wall;
• sizing the dimensions of said cavity with said space being sufficient to receive and house therein a cushion from the butt end of a pool cue or another extender section;
• manually selecting optional cue weights for adjusting the weight of said cue;
• housing in said cavity said butt end cue cushion alone and/or with said weights;
• and
• adapting a mating bore positioned through said base cushion and into said butt end of said pool cue, with internal threads that align and mate with threads on said stub shaft.

In a multi-piece pool cue having a cue section with a base end and a convex bumper affixed thereto, a manually coupled extension piece coupled at a central longitudinal opening located on a longitudinal center axis for said cue by separated yet connectable threaded female and male connectors located and secured in the pool cue and in the extension piece, respectively, together with manually selectable cue weights for adjusting the weight of said cue, the improvement comprising:

• said convex bumper has a longitudinal female opening bored through said cushion and threaded into said base end of said cue;
• and said extension piece has a mating threaded male stub shaft which:
• A. lies along said longitudinal axis,
• B. is secured in said extension piece, and
• C. extends forward and beyond a concave cavity which is located in a forward facing end of said extension piece with sufficient threaded male portion exposed beyond said extension piece forward end for mating with the female threads in said cue base end after passing through said bore in said cushion;
• and
• said cavity formed by a thin cylindrical upstanding wall of said extension piece and including a void space between an interior wall surface and the cylindrical stub shaft exterior for receiving therein said weights if any and/or the affixed cushion alone for housing same in said void space.