Interchangeable Golf Club Heads with Shared Shaft

Abstract

A system of interchangeable club heads sharing one or more shafts and golf bag for carrying the club heads and one or more shafts. The club heads contain a shaft segment to set club length and a coupler to interconnect to the shaft and grip. The shaft contains an opposite gender coupler. The system is very lightweight and much more portable than a conventional set of golf clubs. It also creates the opportunity for players to match club heads with shafts with differing performance characteristics. Additionally, it solves a problem for golfers using long shafts on putters. These long shafts can now be disassembled for storage and transport.

What is claimed is: 
     
         1 . A golf club system, comprising:
 a golf club shaft having a grip end and a club head end and a length from the grip end to the club head end, wherein the golf club shaft is tapered such that it is has an internal diameter that gets smaller the golf club head end of the golf club shaft;   a golf club grip affixed to the golf club grip end of the golf club shaft;   a coupler insert pin that is affixed to the golf club shaft and has a diameter set to fit the smallest internal diameter of the golf club shaft at the golf club head end of the golf club shaft;   a coupler housing that is inserted into the coupler insert pin; and   a plurality of interchangeable golf club heads, each golf club head having a club head shaft that has a length that varies in accordance with the gold club head, and a golf club head pin, wherein each club head pin is configured to be inserted into the coupler housing to fixed attach the golf club head to the.   
     
     
         2 . The golf club system of  claim 1 , wherein the coupler housing further comprises a conical portion, and wherein the. 
     
     
         3 . The golf club system of  claim 1 , wherein coupler insert pin includes a threaded end to accept the coupler housing, and wherein the coupler housing has internal threads that match the threaded end of the coupler insert pin. 
     
     
         4 . The golf club system of  claim 2 , wherein the threading is in a counterclockwise direction for golf clubs to be used by right-handed players. 
     
     
         5 . The golf club system of  claim 2 , wherein the threading is in a clockwise direction for golf clubs to be used by left-handed players. 
     
     
         6 . The golf club system of  claim 1 , further comprising:
 an alignment notch; and   an alignment pin that cooperates with the alignment notch to ensure the golf club shaft lines up the same way with each club head in the golf club system.