Patent ID: 8727906
Filing Date: 2014-05-20
Classification: A63B

Abstract:
1. An adjustable golf club comprising: a shaft sleeve comprising a shaft sleeve axis, and a shaft-receiving bore, the shaft-receiving bore having a bore axis that is coaxial with the shaft sleeve axis; a first tubular adjustment piece comprising non-parallel upper and lower surfaces, the first tubular adjustment piece encircling at least a portion of the shaft sleeve, a second tubular adjustment piece comprising non-parallel upper and lower surfaces, the second tubular adjustment piece encircling at least a portion of the shaft sleeve; and a golf club head comprising a hosel, the hosel comprising a hosel bore, at least part of the hosel bore having a diameter sized to receive at least a part of the shaft sleeve, wherein the lower surface of the first tubular adjustment piece comprises a first feature selected from the group consisting of a convex portion and a concave portion, wherein the upper surface of the second tubular adjustment piece comprises a second feature sized to mate with the first feature, wherein each of the first and second tubular adjustment pieces provides a plurality of angular adjustments, wherein when at least part of the shaft sleeve is disposed within the hosel bore, rotating the first and second tubular adjustment pieces around the shaft sleeve changes the angle of the shaft sleeve with respect to the golf club head, and wherein said first feature is on the entire surface of the lower surface of the first tubular adjustment piece such that there is only one convex or concave portion throughout the lower surface of the first tubular adjustment piece.