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Patent Agency Ranking
公开(公告)号：US08758151B2
公开(公告)日：2014-06-24
申请号：US13730156
申请日：2012-12-28
Applicant: Dunlop Sports Co. Ltd.
Inventor： Wataru Kimizuka , Masahide Onuki
CPC classification number: A63B69/3658 , G06T7/20 , G06T7/73 , G06T2207/10004 , G06T2207/30204 , G06T2207/30224
Abstract: A head measuring method of the present invention includes: (a) preparing a golf club having a head having a plurality of markers provided thereon; (b) photographing the head by a camera disposed at a position, wherein a backward distance between the position and a center point of a ball is equal to or greater than 0, to obtain a head image near an impact; and (c) analyzing the head image to calculate a position and attitude of the head near the impact. Preferably, three or more combinations of the markers set such that the marker interval is equal to or greater than a head vertical width exist.
Abstract translation: 本发明的头部测量方法包括：（a）制备具有设置在其上的多个标记的头部的高尔夫球杆; （b）通过设置在位置处的摄像机拍摄头部，其中位置和球的中心点之间的后方距离等于或大于0，以获得靠近撞击的头部图像; 和（c）分析头部图像以计算头部靠近撞击的位置和姿态。 优选地，标记的三个或更多个组合被设置为使得标记间隔等于或大于头垂直宽度。
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公开(公告)号：US10806979B2
公开(公告)日：2020-10-20
申请号：US13871055
申请日：2013-04-26
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Wataru Kimizuka , Masahide Onuki
Abstract: This fitting method includes, for example, the following steps A1 to E1: (A1) a step of measuring a plurality of impact conditions using a reference club; (B1) a step of obtaining hit ball arrival point data; (C1) a step of selecting two or more of the plurality of impact conditions as explanation variables and performing multiple linear regression analysis with the hit ball arrival point data as an objective variable; (D1) a step of selecting a specific explanation variable from the two or more explanation variables based on a result of the multiple linear regression analysis; and (E1) a step of determining a recommended club including a specification capable of suppressing variation in the specific explanation variable.
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公开(公告)号：US09776055B2
公开(公告)日：2017-10-03
申请号：US14848999
申请日：2015-09-09
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Naoyoshi Ueda , Masahiko Ueda , Yasushi Sugimoto , Takashi Nakamura , Seiji Hayase , Wataru Kimizuka
Abstract: A golf club 2 includes a head 4, a shaft 6, and a grip 8. A club inertia moment about a swing axis is defined as Isw. A club inertia moment about a grip end is defined as Ige. Ige is 2870 (kg·cm2) or greater and less than 2920 (kg·cm2). Isw/Ige is equal to or less than 2.46. A club weight is defined as Wc (kg), an axial direction distance from the grip end to a center of gravity of the club is defined as Lc (cm), and a club inertia moment about the center of gravity of the club is defined as Ic (kg·cm2). Isw is calculated by Equation (1) below. Ige is calculated by Equation (2) below. Isw=Wc×(Lc+60)2+Ic (1) Ige=Wc×(Lc)2+Ic (2)
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公开(公告)号：US09586107B2
公开(公告)日：2017-03-07
申请号：US14848857
申请日：2015-09-09
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Naoyoshi Ueda , Masahiko Ueda , Yasushi Sugimoto , Takashi Nakamura , Seiji Hayase , Wataru Kimizuka
CPC classification number: A63B53/14 , A63B53/00 , A63B53/10 , A63B2209/023
Abstract: A golf club 2 includes a head 4, a shaft 6, and a grip 8. A club inertia moment about a swing axis is defined as Isw. A club inertia moment about a grip end is defined as Ige. Ige is 2820 (kg·cm2) or greater and less than 2870 (kg·cm2). Isw/Ige is equal to or less than 2.42. A club weight is defined as Wc (kg), an axial direction distance from the grip end to a center of gravity of the club is defined as Lc (cm), and a club inertia moment about the center of gravity of the club is defined as Ic (kg·cm2). Isw is calculated by Equation (1) below. Ige is calculated by Equation (2) below. Isw=Wc×(Lc+60)2+Ic (1) Ige=Wc×(Lc)2+Ic (2)
Abstract translation: 高尔夫球杆2包括头部4，轴6和把手8.围绕摆动轴线的球杆惯性矩被定义为Isw。 关于握柄端的球杆惯性力矩定义为Ige。 Ige为2820（kg·cm2）以上且小于2870（kg·cm2）。 Isw / Ige等于或小于2.42。 球杆重量被定义为Wc（kg），从球杆的抓握端到重心的轴向距离定义为Lc（cm），并且围绕球杆的重心定义球杆惯性力矩 作为Ic（kg·cm 2）。 Isw由下面的等式（1）计算。 Ige由下式（2）计算。 Isw = Wc×（Lc + 60）2 + Ic（1）Ige = Wc×（Lc）2 + Ic（2）
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公开(公告)号：US09795841B2
公开(公告)日：2017-10-24
申请号：US14849148
申请日：2015-09-09
Applicant: DUNLOP SPORTS CO. LTD.
Inventor： Naoyoshi Ueda , Masahiko Ueda , Yasushi Sugimoto , Takashi Nakamura , Seiji Hayase , Wataru Kimizuka
Abstract: A golf club 2 includes a head 4, a shaft 6, and a grip 8. A club inertia moment about a swing axis is defined as Isw. A club inertia moment about a grip end is defined as Ige. Ige is 2920 (kg·cm2) or greater and less than 2970 (kg·cm2). Isw/Ige is equal to or less than 2.48. A club weight is defined as Wc (kg), an axial direction distance from the grip end to a center of gravity of the club is defined as Lc (cm), and a club inertia moment about the center of gravity of the club is defined as Ic (kg·cm2). Isw is calculated by Equation (1) below. Ige is calculated by Equation (2) below. Isw=Wc×(Lc+60)2+Ic (1) Ige=Wc×(Lc)2+Ic (2)
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