Patent ID: 8419564

Claim:
An adjustable length golf club comprising: a first shaft; a second shaft having a hollow portion configured to movably receive a portion of the first shaft; a head attached to one of the first shaft or the second shaft; a grip attached to one of the first shaft or the second shaft opposite the head; a collar located on the hollow portion of the second shaft and having a first side and a second side, the first side and the second side defining a gap, the collar comprising a bore extending from the first side to the gap, the bore including a first bore section and a second bore section having a diameter greater than a diameter of the first bore section to define an annular ledge in the bore between the first bore section and the second bore section; wherein the bore is configured to receive a bolt having a first bolt section configured to be received in the first bore section and a second bolt section configured to be received in the second bore section, the second bolt section having a greater diameter than a diameter of the first bolt section to define an annular shoulder on the bolt between the first bolt section and the second bolt section; wherein the first bolt section is configured to engage the second side of the collar to expand the collar from a first position to a second position when the first bolt section is advanced into the first bore section; wherein the annular shoulder of the bolt engages the annular ledge of the bore to stop further insertion of the bolt into the bore; and wherein the first shaft and the second shaft are frictionally locked in the first position of the collar and the first shaft and the second shaft are movable relative to each other in the second position of the collar.