公开(公告)号：US09533198B2

公开(公告)日：2017-01-03

申请号：US14181259

申请日：2014-02-14

Applicant: Dunlop Sports Co. Ltd.

Inventor： Yosuke Yamamoto

IPC: A63B49/04

CPC classification number: A63B60/42 ,  A63B49/022 ,  A63B49/035 ,  A63B60/02 ,  A63B2102/02 ,  A63B2209/08

Abstract: In a racket frame 2, stoppers 28 are each located on a tip side of a narrow diameter portion 26 protruding from a side of an inner circumferential surface 4b of a head 4. A steel sheets 16 is fixed on the side of the inner circumferential surface 4b opposing the stoppers 28 via the narrow diameter portion 26. Weights 14 each include a magnet sheet 32. The narrow diameter portion 26 is inserted through notches 36 and 38 of the weights 14. The steel sheets 16 and the magnet sheet 32 are bound with magnetic force. The notches 36 and 38 of the weights 14 are locked to a string protecting member 12. The stoppers 28 prevent the weights 14 from being detached form the head 4. The weights 14 are detachably mounted on the head 4.

Abstract translation: 在球拍架2中，挡块28分别位于从头部4的内周面4b的一侧突出的窄径部26的前端侧。钢板16固定在内周面 4b通过窄径部分26与止动件28相对。重量14各自包括磁片32.窄直径部分26通过重物14的凹口36和38插入。钢板16和磁体片32与 磁力。 重物14的凹口36和38被锁定到绳保护构件12.止挡件28防止重物14从头部4分离。重物14可拆卸地安装在头部4上。

公开(公告)号：US09717967B2

公开(公告)日：2017-08-01

申请号：US13651825

申请日：2012-10-15

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Yosuke Yamamoto

IPC: G06F17/00 ,  A63B60/42 ,  A63B59/00 ,  G09B19/00

CPC classification number: A63B60/42 ,  G06F17/00 ,  G09B19/0038

Abstract: A tennis racket fitting method according to the present invention comprises: a first step of preparing a plurality of test tennis rackets, at least one type of racket property that influences swing for hitting a ball being defined for each of the test tennis rackets; a second step of causing a reference tennis racket to be swung at least one time by a user in order to hit a tennis ball, and acquiring a measured value by measuring transition in at least one of the position, the velocity, the acceleration, and the angular velocity of the reference tennis racket in at least a portion of an interval from when the swing starts until when the swing ends; a third step of calculating at least one evaluation indicator to be an evaluation of the swing of the reference tennis racket based on the measured value; and a fourth step of, based on the racket property, selecting a tennis racket that can improve at least one evaluation indicator from among the test tennis rackets.

公开(公告)号：US10245473B2

公开(公告)日：2019-04-02

申请号：US15807576

申请日：2017-11-09

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Yosuke Yamamoto

IPC: A63B49/02 ,  A63B49/10

Abstract: A racket frame has an inner thick part (28) having an outer surface (12), an inner surface (14) and a pair of middle surfaces (16) each positioned between the outer surface (12) and the inner surface (14). A thickness (Ti) of the inner surface (14) is greater than a thickness (To) of the outer surface (12). A thickness of the inner thick part (28) gradually increases toward the inside. Consequently, the middle surface (16) is inclined with respect to an X direction. A distance (Ld) between an outer end and an inner end in a thickness direction of the middle surface (16) is equal to or greater than 0.5 mm.

公开(公告)号：US09311727B2

公开(公告)日：2016-04-12

申请号：US13652143

申请日：2012-10-15

Applicant: DUNLOP SPORTS CO. LTD.

Inventor： Yosuke Yamamoto ,  Hironori Takihara ,  Kuniyasu Horiuchi

IPC: G06T11/20 ,  A63B69/38 ,  G01P15/18 ,  A63B71/06 ,  A63B24/00 ,  G09B19/00

CPC classification number: G06T11/206 ,  A63B24/0003 ,  A63B69/38 ,  A63B71/0619 ,  A63B2220/31 ,  A63B2220/34 ,  A63B2220/36 ,  A63B2220/44 ,  G01P15/18 ,  G09B19/0038

Abstract: A tennis swing movement analyzing apparatus of the present invention includes an acquisition unit configured to acquire sampling data obtained by sampling a swing movement of a tennis racket by a user; a calculation unit configured to, based on the sampling data, calculate an indicator selected from among the velocity, the acceleration, the angular velocity, and the position of the tennis racket or a ball hit by the tennis racket and an arbitrary combination thereof; and a screen creation unit configured to create a GUI screen displaying a graph area that is divided into a plurality of areas respectively indicating types of swings and displaying the indicator in the graph area.

Abstract translation: 本发明的网球摆动运动分析装置包括获取单元，其被配置为获取通过用户对网球拍的摆动进行采样而获得的采样数据; 计算单元，被配置为基于所述采样数据计算从所述网球拍或所述网球拍击中的球的速度，加速度，角速度和位置及其任意组合中选择的指标; 以及画面创建单元，被配置为创建GUI屏幕，其显示分割成表示各种摆动的多个区域并在图形区域中显示该指示符的图形区域。