| 摘要 |
<p>A substantially improved table soccer/fussball game playing ball (26) is fabricated by molding an oversized spherical blank (28) entirely from a single thermoplastic material (30), preferably a urethane material having a hardness within the approximate range of from about 50 Shore D to about 60 Shore D. The oversized molded blank (28) is then subjected to a precision surface machining process, preferably using a centerless grinding machine, to reduce its diameter (Di) to a desired finished magnitude (Df) and to provide the resulting finished playing ball (26) with a very precisely spherical shape. Compared to conventionally fabricated table soccer playing balls, the machined, single thermoplastic material playing ball (26) provides a variety of advantages including a truer playing roll, considerably more durability and resistance to surface wear, and the desirable ability to retain its 'like new' playing characteristics for a much longer period of time.</p> |
