Abstract: It is a sport equipment 2 using a partially hardened sheet form prepreg 10 formed by impregnating a reinforced fiber material 6 disposed substantially parallel with a thermal hardening resin material 7 to bind the reinforced fiber material, where the prepreg is layered so as to form a tube rod in a tapered shape having a diameter increasing from one end to the other, and the tube rod is provided with a strengthening means on a radially entire circumference to the axis direction. Herewith it is especially used for a golf club shaft, while maintaining a characteristic of light weight, securing strength equal to or greater than a steel-made golf shaft, and suppressing unnecessary deflection and vibration, so as to provide a sports equipment made of a reinforced fiber combined material such as a gold club shaft having high strength such as bending and twisting rigidity.

Abstract: A pierced earring fastener 1 has: a pinching member 2 made of three balls 2a, 2a, 2a; a holder 3 that is a rubber-like elastic member; and a ring 5 for tightening the pinching member 2 and the holder 3. The three balls 2a, 2a, 2a are disposed in a ring shape at intervals of 120 degrees in a circumferential direction, as elements that form the pinching member 2. These balls are retained at predetermined positions by means of the holder 3. The holder completely surrounds the circular pinching member 2 formed by the three balls 2a. A through hole 3a penetrating a center of both of end faces 3c, 3c is formed via a gap 2b formed at the center of a ring formed by the pinching member 2 closed inside thereof.

Abstract: It is a sport equipment 2 using a partially hardened sheet form prepreg 10 formed by impregnating a reinforced fiber material 6 disposed substantially parallel with a thermal hardening resin material 7 to bind the reinforced fiber material, where the prepreg is layered so as to form a tube rod in a tapered shape having a diameter increasing from one end to the other, and the tube rod is provided with a strengthening means on a radially entire circumference to the axis direction. Herewith it is especially used for a golf club shaft, while maintaining a characteristic of light weight, securing strength equal to or greater than a steel-made golf shaft, and suppressing unnecessary deflection and vibration, so as to provide a sports equipment made of a reinforced fiber combined material such as a gold club shaft having high strength such as bending and twisting rigidity.

Abstract: A pierced earring fastener 1 has: a pinching member 2 made of three balls 2a, 2a, 2a; a holder 3 that is a rubber-like elastic member; and a ring 5 for tightening the pinching member 2 and the holder 3. The three balls 2a, 2a, 2a are disposed in a ring shape at intervals of 120 degrees in a circumferential direction, as elements that form the pinching member 2. These balls are retained at predetermined positions by means of the holder 3. The holder completely surrounds the circular pinching member 2 formed by the three balls 2a. A through hole 3a penetrating a center of both of end faces 3c, 3c is formed via a gap 2b formed at the center of a ring formed by the pinching member 2 closed inside thereof.