| 摘要 |
<p>A method of producing golf clubs and having the same, or regularly increasing or decreasing flexibility which consists in manufacturing each shaft of the clubs from several different tubes, one tube possibly tapering in its central part and made from metal or synthetic fibers such as carbon fibers, boron fibers, glass fibers or aromatic polyamid fibers which is inserted into two other tubes, preferably of metal, one forming the support for the head of the club and the other the handle over lengths respectively such that the frequency of vibration of the club, which depends on its flexibility, over a length equal to its size less a distance d from the top of the handle, is controlled.</p> |
