Patent ID: 9468816
Filing Date: 2016-10-18
CPC Classification: A63B

Claim Text:
1. A golf club assembly comprising: a club head having a hosel defining an upper opening, and a sole defining a lower opening in communication with the upper opening; a club shaft having a lower end portion; a shaft sleeve mounted on the lower end portion of the shaft and adapted to be received in the upper opening of the club head, the shaft sleeve having: a screw having a screw head and an externally threaded screw shaft extending from the screw head, wherein the secondary portion bore is releasably securable to the club head by inserting the screw through the lower opening and tightening the screw into the secondary portion bore and place a tensile load on a portion of the primary portion within the club head, and wherein the screw is formed of a screw material having a screw material density, a screw material tensile strength, and a screw material percent elongation to break; wherein the primary portion percent elongation to break is at least four percent, the primary portion percent elongation to break is at least twenty-five percent of the secondary portion percent elongation to break, the primary portion percent elongation to break is at least twenty-five percent of the screw material percent elongation to break, and the primary portion volume is at least five times the secondary portion volume.