10-01-2019 дата публикации
Номер: US20190009149A1
A golf club includes a head, a shaft, and a grip. The golf club has a club vibration frequency of less than or equal to 210 cpm. The golf club has a club length of greater than or equal to 45.7 inches and less than or equal to 46.5 inches. With the golf club, a force acting on the player's body during a swing can be reduced. The golf club can stabilize swing. 1. A golf club comprising:a head;a shaft; anda grip, whereina club vibration frequency is less than or equal to 210 cpm, anda club length is greater than or equal to 45.7 inches and less than or equal to 46.5 inches.2. The golf club according to claim 1 , whereina grip weight Wg is less than or equal to 30 g.3. The golf club according to claim 1 , wherein claim 1 ,when a weight of the head is denoted by Wh, and a weight of the club is denoted by Wc, Wh/Wc is greater than or equal to 0.72.4. The golf club according to claim 1 , wherein{'b': '5', 'a swing weight is greater than or equal to D.'}5. The golf club according to claim 1 , wherein claim 1 ,{'b': 1', '2', '1', '2, 'when a distance between a butt-side end of the grip and a center of gravity of the grip is denoted by Lg, and a length of the grip is denoted by Lg, Lg/Lg is greater than or equal to 0.37.'}6. The golf club according to claim 1 , wherein{'sup': '2', 'claim-text': {'br': None, 'i': 'GLL=Wg×L×L', 'Shoulder center grip \u2003\u2003(1)'}, 'a shoulder center grip GLL calculated by Equation (1) below is less than or equal to 140 kg·cm {'br': None, 'i': L', 'Lg, 'sup': 2', '2', '1/2, '=[60+(1)]\u2003\u2003(2)'}, 'wherein Wg is a weight (kg) of the grip, and L is a value calculated by Equation (2) below{'b': '1', 'wherein Lg is a distance (cm) between a butt-side end of the grip and a center of gravity of the grip.'}7. The golf club according to claim 1 , whereina shaft weight Ws is less than 50 g.8. The golf club according to claim 1 , whereina shaft weight Ws is less than or equal to 43 g.9. The golf club according to claim 1 , whereina club weight ...
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