| 摘要 |
<p>A golf club shaft is made of a composite material and includes an upper portion with an enlarged lower end section, and a lower portion with an enlarged upper end section which is adjacent to the enlarged lower end section of the upper portion. The enlarged lower and upper end sections define a contracted section therebetween near the middle portion of the shaft. The upper portion decreases in diameter from the upper end thereof to the upper end of the enlarged lower end section and has a maximum diameter at an axial point which is located on the enlarged lower end section. The upper end of the upper portion is adapted to couple with a grip. The lower portion increases in diameter from the lower end thereof to the lower end of the enlarged upper end section and has a maximum diameter at another axial point which is located on the enlarged upper end section. The lower end of the lower portion is adapted to couple with a club head. Accordingly, two flex points are formed on the shaft, one being located on the contracted section, the other on the lower portion below the enlarged upper end section.</p> |
