公开(公告)号：US20050266941A1

公开(公告)日：2005-12-01

申请号：US11135379

申请日：2005-05-24

Applicant: Takeshi Ashino ,  Kunio Niwa

Inventor： Takeshi Ashino ,  Kunio Niwa

IPC: A63B49/02 ,  A63B49/00 ,  A63B49/10 ,  A63B59/00

CPC classification number: A63B49/02 ,  A63B49/10 ,  A63B60/42 ,  A63B2049/0201 ,  A63B2049/0202 ,  A63B2049/0207 ,  A63B2049/0212 ,  A63B2209/02

Abstract: In a tennis racket having a racket frame composed of a fiber reinforced resin, the moment of inertia Ic of the tennis racket in a center direction thereof is set to not less than 13000 g·cm2 nor more than 17000 g·cm2, the moment of inertia Ig around a center of gravity thereof is set to not less than 80000 g·cm2 nor more than 200000 g·cm2, and the moments of inertia Ic and Ig are so set as to satisfy a relationship expressed by [30×(Ic)−(Ig)]/10000≧31.

Abstract translation: 在具有由纤维增强树脂构成的球拍框的网球拍中，网球拍在其中心方向的惯性矩Ic被设定为不小于13000g·cm 2以上 17000g·cm 2，其重心周围的惯性矩1g设定为不小于80000g·cm 2以上，不大于200000g·cm， SUP> 2，惯性矩Ic和Ig被设定为满足由[30x（Ic） - （Ig）] / 10000> = 31表示的关系。

公开(公告)号：US06688997B2

公开(公告)日：2004-02-10

申请号：US10188074

申请日：2002-07-03

Applicant: Takeshi Ashino ,  Kunio Niwa ,  Hiroyuki Takeuchi

Inventor： Takeshi Ashino ,  Kunio Niwa ,  Hiroyuki Takeuchi

IPC: A63B4900

CPC classification number: A63B49/03 ,  A63B60/54 ,  A63B2209/02

Abstract: A racket frame (1) has a pipe-shaped racket-frame body (2) made of a fiber reinforced resin and composed of a head (3), a throat part (4), a shaft part (5), and a grip part (6) sequentially arranged and a yoke (10) connected to the racket-frame body (2). In this construction, supposing that the head (3) is a clock face and that the top position of the head (3) is 12 o'clock, a yoke rigidity value at a central position P1, vertical to a ball-hitting face (F), of the yoke (10) in a longitudinal direction thereof is in a range of 10% to 70% of a face rigidity value which is an average of a rigidity value at a 12 o'clock position (P2) vertical to the ball-hitting face (F) and a rigidity value at a three o'clock position (P3) vertical to the ball-hitting face (F).

Abstract translation: 球拍框架（1）具有由纤维增强树脂制成的管状球拍框架体（2），由头部（3），喉部（4），轴部（5）和手柄 依次布置的部分（6）和连接到球拍框体（2）的轭（10）。 在这种结构中，假设头部（3）是钟面并且头部（3）的顶部位置是12点钟，则在中心位置P1处的垂直于击球面的轭刚度值 磁轭（10）的长度方向的F（F）的面积刚度值的10％〜70％的范围是垂直于该磁轭的12点钟位置（P2）的刚度值的平均值 击球面（F）和垂直于击球面（F）的三点钟位置（P3）处的刚度值。

公开(公告)号：US07431673B2

公开(公告)日：2008-10-07

申请号：US11448044

申请日：2006-06-07

Applicant: Kunio Niwa ,  Takeshi Ashino

Inventor： Kunio Niwa ,  Takeshi Ashino

IPC: A63B49/02

CPC classification number: A63B51/00 ,  A63B49/022 ,  A63B49/03 ,  A63B51/10 ,  A63B60/50

Abstract: In a racket frame, a yoke part is disposed between left and right portions of a bifurcated throat part continuous with a head part and with a shaft part. A ball-hitting face is formed with the yoke part and the head part. The head part and the yoke part have a plurality of string holes formed in penetration therethrough to insert longitudinal and transverse strings therethrough. Longitudinal string holes formed outside left and right sides of the yoke part connected with the left and right portions of the throat part are extended to the throat part to form extended longitudinal string holes open on an outer surface of the throat part.

Abstract translation: 在球拍架中，轭部设置在与头部连续的分叉喉部的左右部分和轴部之间。 撞击面与轭部和头部形成。 头部和轭部具有穿过其中形成的多个线孔，以插入纵向和横向线。 与喉部的左右部连接的轭部的左右两侧形成的纵列孔延伸到喉部，形成在喉部的外表面开放的延伸的纵向孔洞。

公开(公告)号：US07273430B2

公开(公告)日：2007-09-25

申请号：US11407092

申请日：2006-04-20

Applicant: Takeshi Ashino ,  Kunio Niwa

Inventor： Takeshi Ashino ,  Kunio Niwa

IPC: A63B49/02 ,  A63B49/10

CPC classification number: A63B49/02 ,  A63B49/10 ,  A63B2209/02

Abstract: A tennis racket frame is composed of a laminate of prepregs each containing carbon fibers serving as a reinforcing fiber thereof. At least one part of layers of the laminate is formed as a hard layer consisting of a prepreg composed of the reinforcing carbon fibers and a hard carbon film (DLC film) formed on the surface of the carbon fibers.

Abstract translation: 网球拍框由包含用作其增强纤维的碳纤维的预浸料坯的层叠体构成。 层叠体的至少一部分层形成为由由增强碳纤维构成的预浸料和在碳纤维的表面上形成的硬质碳膜（DLC膜）构成的硬质层。

公开(公告)号：US20070026977A1

公开(公告)日：2007-02-01

申请号：US11448044

申请日：2006-06-07

Applicant: Kunio Niwa ,  Takeshi Ashino

Inventor： Kunio Niwa ,  Takeshi Ashino

IPC: A63B49/02

CPC classification number: A63B51/00 ,  A63B49/022 ,  A63B49/03 ,  A63B51/10 ,  A63B60/50

Abstract: In a racket frame, a yoke part is disposed between left and right portions of a bifurcated throat part continuous with a head part and with a shaft part. A ball-hitting face is formed with the yoke part and the head part. The head part and the yoke part have a plurality of string holes formed in penetration therethrough to insert longitudinal and transverse strings therethrough. Longitudinal string holes formed outside left and right sides of the yoke part connected with the left and right portions of the throat part are extended to the throat part to form extended longitudinal string holes open on an outer surface of the throat part.

Abstract translation: 在球拍架中，轭部设置在与头部连续的分叉喉部的左右部分和轴部之间。 撞击面与轭部和头部形成。 头部和轭部具有穿过其中形成的多个线孔，以插入纵向和横向线。 与喉部的左右部连接的轭部的左右两侧形成的纵列孔延伸到喉部，形成在喉部的外表面开放的延伸的纵向孔洞。

公开(公告)号：US07059981B2

公开(公告)日：2006-06-13

申请号：US10855606

申请日：2004-05-28

Applicant: Takeshi Ashino ,  Kunio Niwa

Inventor： Takeshi Ashino ,  Kunio Niwa

IPC: A63B49/10

CPC classification number: A63B49/10 ,  A63B49/02 ,  A63B49/03 ,  A63B60/42 ,  A63B60/54 ,  A63B2209/02

Abstract: A racket frame (10) including a laminate having not less than two fiber reinforced resinous layers layered one upon another and one or more modified fiber reinforced resinous layers (20) each containing a modified resinous composition, as a matrix resin, having a loss factor (=tan δ) not less than 0.5 nor more than 3.0, when the loss factor is measured at a temperature of 0° C. to 10° C. and a frequency of 10 Hz. A weight of the modified fiber reinforced resinous layers (20) is set to not less than 1% nor more than 10% of a weight of the fiber reinforced resinous layers.

Abstract translation: 一种球拍框架（10），其包括具有不少于2个彼此层叠的纤维增强树脂层的层叠体和一个或多个各自含有改性树脂组合物的改性纤维增强树脂层（20）作为基质树脂，具有损耗因子 当在0℃至10℃的温度和10Hz的频率下测量损耗因子时，（=tanδ）不小于0.5且不大于3.0。 改性纤维增强树脂层（20）的重量设定为不小于纤维增强树脂层重量的1％且不大于10％。

公开(公告)号：US06663514B2

公开(公告)日：2003-12-16

申请号：US10180526

申请日：2002-06-27

Applicant: Kunio Niwa ,  Hiroyuki Takeuchi ,  Takeshi Ashino

Inventor： Kunio Niwa ,  Hiroyuki Takeuchi ,  Takeshi Ashino

IPC: A63B4900

CPC classification number: A63B60/54 ,  A63B49/02 ,  A63B49/03 ,  A63B60/42 ,  A63B2049/0202 ,  A63B2049/0212 ,  A63B2209/02

Abstract: A frame body (2) is formed separately from a yoke (10) connecting right and left parts of the frame body (2) to each other. The yoke (10) and the frame body (2) are connected to each other by a mechanical connection means, with both ends of the yoke (10) in contact with the right and left parts of the frame body (2) in an area of not less than 10 cm2 (1.6 in2). A shear force generated when the racket frame (1) deforms is collectively applied to a connection surface of the frame body (2) and that of the yoke (10) to increase a vibration-damping performance of the racket frame (1).

Abstract translation: 框架体（2）与将框架体（2）的右部和左部彼此连接的轭架（10）分开形成。 轭架（10）和框架体（2）通过机械连接装置彼此连接，轭架（10）的两端与框体（2）的左右部分接触在一个区域 不小于10cm 2（1.6 in <2>）。 当球拍框架（1）变形时产生的剪切力被共同地施加到框架体（2）的连接表面和轭架（10）的连接表面上，以增加球拍框架（1）的减振性能。

公开(公告)号：US20060281590A1

公开(公告)日：2006-12-14

申请号：US11407092

申请日：2006-04-20

Applicant: Takeshi Ashino ,  Kunio Niwa

Inventor： Takeshi Ashino ,  Kunio Niwa

IPC: A63B49/10

CPC classification number: A63B49/02 ,  A63B49/10 ,  A63B2209/02

Abstract: A tennis racket frame is composed of a laminate of prepregs each containing carbon fibers serving as a reinforcing fiber thereof. At least one part of layers of the laminate is formed as a hard layer consisting of a prepreg composed of the reinforcing carbon fibers and a hard carbon film (DLC film) formed on the surface of the carbon fibers.

Abstract translation: 网球拍框由包含用作其增强纤维的碳纤维的预浸料坯的层叠体构成。 层叠体的至少一部分层形成为由由增强碳纤维构成的预浸料和在碳纤维的表面上形成的硬质碳膜（DLC膜）构成的硬质层。

公开(公告)号：US20050003912A1

公开(公告)日：2005-01-06

申请号：US10855606

申请日：2004-05-28

Applicant: Takeshi Ashino ,  Kunio Niwa

Inventor： Takeshi Ashino ,  Kunio Niwa

IPC: A63B49/02 ,  A63B49/10 ,  A63B49/12 ,  A63B59/00

CPC classification number: A63B49/10 ,  A63B49/02 ,  A63B49/03 ,  A63B60/42 ,  A63B60/54 ,  A63B2209/02

Abstract: A racket frame (10) including a laminate having not less than two fiber reinforced resinous layers layered one upon another and one or more modified fiber reinforced resinous layers (20) each containing a modified resinous composition, as a matrix resin, having a loss factor (=tan δ) not less than 0.5 nor more than 3.0, when the loss factor is measured at a temperature of 0° C. to 10° C. and a frequency of 10 Hz. A weight of the modified fiber reinforced resinous layers (20) is set to not less than 1% nor more than 10% of a weight of the fiber reinforced resinous layers.

Abstract translation: 一种球拍框架（10），其包括具有不少于2个彼此层叠的纤维增强树脂层的层叠体和一个或多个各自含有改性树脂组合物的改性纤维增强树脂层（20）作为基质树脂，具有损耗因子 当在0℃至10℃的温度和10Hz的频率下测量损耗因子时，（=tanδ）不小于0.5且不大于3.0。 改性纤维增强树脂层（20）的重量设定为不小于纤维增强树脂层重量的1％且不大于10％。

公开(公告)号：US20080015063A1

公开(公告)日：2008-01-17

申请号：US11798757

申请日：2007-05-16

Applicant: Takeshi Ashino ,  Kunio Niwa

Inventor： Takeshi Ashino ,  Kunio Niwa

IPC: A63B49/02

CPC classification number: A63B49/022 ,  A63B49/02 ,  A63B49/025 ,  A63B60/00

Abstract: A racket frame including a yoke part disposed between left and right portions of a throat part continuous with a head part and a shaft part; a string-mounting part, including the yoke part and the head part, which surrounds the ball-hitting face; and string holes formed on the string-mounting part. In this construction, supposing that a total of longitudinal string holes whose axial directions are parallel with a line drawn from an apex of the ball-hitting face to a center of a gripping part and transverse string holes whose axial directions are parallel with a widthwise direction, of the racket frame, which is orthogonal to the axial direction of the racket frame is Ns1 and that a total of all of the string holes is N1, a ratio of Ns1 to N1 is set to not less than 0.70 nor more than 1.0.

Abstract translation: 一种球拍架，包括设置在与头部连续的喉部的左右部分和轴部之间的轭部; 包括轭部和头部的绳安装部，其围绕击球面; 以及形成在琴弦安装部上的弦孔。 在这种结构中，假设总体上的纵向排列孔的轴向平行于从击球面的顶点到夹持部分的中心的线条，并且横向线孔的轴向方向与宽度方向平行 与球拍框架的轴向正交的球拍框架为Ns1，并且所有弦孔的总数为N1，Ns1与N1的比设定为不小于0.70，也不大于1.0。