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    Sports racket having a uniform string structure
    1.
    发明申请
    Sports racket having a uniform string structure 有权

    公开(公告)号：US20020098925A1

    公开(公告)日：2002-07-25

    申请号：US09971830

    申请日：2001-10-04

    Inventor： Richard A. Brandt

    IPC: A63B049/02

    CPC classification number: A63B49/02 ,  A63B2049/0201 ,  A63B2049/0203 ,  A63B2049/0204 ,  A63B2049/0207 ,  A63B2060/002

    Abstract: A sports racket, for tennis and the like sports, has an elongated handle attached to a head having a racket face, which is spanned by a uniform string structure. The head has four sides, forming a non-elliptical shape, in which the opposite sides are substantially parallel. Longitudinal strings, all of which are substantially identical in length and run essentially parallel to each other, and transversal strings, all of which are substantially identical in length and run essentially parallel to each other and perpendicular to the longitudinal axis, span the racket face. The racket has a larger racket face than conventional rackets, while maintaining the length and weight measurements of conventional rackets, resulting in a very large sweet spot and more good hits. The racket has maximally long strings at all points on the racket face and strings substantially identical in length at all points on the racket face resulting in a uniformity of response for off-center hits, an increase in the ball rebound speed, a decrease in angular deflection for off-center hits, and the ability to set the tension of the strings such that they vibrate with the same frequency. The racket has a greater moment of inertia than conventional rackets, resulting in reduced racket rotation and a reduction of injuries to players, such as nulltennis elbownull.

    Throatless squash racquet
    2.
    发明授权
    Throatless squash racquet 失效
    无脊椎壁球拍

    公开(公告)号：US06358165B1

    公开(公告)日：2002-03-19

    申请号：US08279837

    申请日：1994-07-25

    Applicant: Stephen J. Davis

    Inventor： Stephen J. Davis

    IPC: A63B4902

    CPC classification number: A63B49/02 ,  A63B49/022 ,  A63B49/03 ,  A63B49/10 ,  A63B2049/0203 ,  A63B2049/0204 ,  A63B2049/0207

    Abstract: A throatless squash racquet includes a hollow tubular frame, preferably of graphite, bent to form a head in which the outer portion is generally circular. The opposing legs of the tubular frame curve inwardly toward one another and then converge linearly. The converging legs continue to converge, but in an inverse curve, to define a narrow neck region, and merge into an elongated shaft. Because of its geometry, the racquet exhibits improved strength and durability.

    Abstract translation: 无喉壁球拍包括中空的管状框架，优选石墨，弯曲形成头部，其中外部部分大致为圆形。 管状框架的相对的腿向内相向地弯曲，然后线性地收敛。 收敛的腿继续会聚，但是在反向曲线中，以限定窄的颈部区域，并且合并成细长的轴。 由于其几何形状，球拍表现出改善的强度和耐久性。

    Fielding practice bat
    3.
    发明申请
    Fielding practice bat 有权

    公开(公告)号：US20010031675A1

    公开(公告)日：2001-10-18

    申请号：US09825550

    申请日：2001-04-02

    Inventor： Craig C. White

    IPC: A63B059/00

    CPC classification number: A63B49/00 ,  A63B49/03 ,  A63B51/02 ,  A63B51/11 ,  A63B60/02 ,  A63B60/06 ,  A63B60/08 ,  A63B60/10 ,  A63B60/14 ,  A63B60/16 ,  A63B60/54 ,  A63B69/0002 ,  A63B2049/0203 ,  A63B2049/0204 ,  A63B2049/0207 ,  A63B2049/0212 ,  A63B2208/12

    Abstract: A fielding practice bat is disclosed having a frame, preferably U-shaped, integrally connecting a head portion and a handle portion, wherein the fielding practice bat has a length, weight and balance equivalent to a conventional baseball bat. The head portion is generally tear-drop in shape and has a width no greater than 12 inches. In addition, the head portion is interwoven with a plurality of main strands of elastic tubing and a plurality of cross strands of elastic tubing. In the preferred embodiment, a single piece of elastic tubing comprises the main strands and cross stands of elastic tubing wherein the piece of elastic tubing is woven through holes in the frame. A forming grid is also disclosed comprising a matrix of cells. The main and cross strands of the fielding practice bat are interwoven through the cells of the forming grid such that each cell contains a single intersection between a main strand and a cross strand, thereby dampening the vibration of the strands upon contact with a ball.

    Racquetball racquet
    5.
    发明授权
    Racquetball racquet 失效
    壁球拍

    公开(公告)号：US6059674A

    公开(公告)日：2000-05-09

    申请号：US985267

    申请日：1997-12-04

    Applicant: Helmut Umlauft

    Inventor： Helmut Umlauft

    IPC: A63B49/00 ,  A63B49/02

    CPC classification number: A63B49/02 ,  A63B49/00 ,  A63B2049/0201 ,  A63B2049/0207

    Abstract: This invention provides for a racquetball racquet combining enhanced ball acceleration, high precision, and comfort. These optimum characteristics are achieved though a racquetball racquet having, in combination, an overall length of between 500 mm and 580 mm, an unstrung weight of between 140 g and 195 g, a head weight of between 52% and 65% of the overall racquet weight, and a center of gravity located between 25 mm relative to the racquet head handle end and 75 mm relative to the distal head end, measured along the longitudinal axis of the racket. The longitudinal strings of the racquetball racquet extend from the racquet head handle end to the racket head distal end are arranged so as to diverge to form a V-configuration. Two neighboring longitudinal strings are each led to a common location on the racquet head handle end.

    Abstract translation: 本发明提供一种结合增强的球加速度，高精度和舒适性的壁球拍。 这些最佳特征是通过一种组合在一起的整体长度在500mm与580mm之间的壁球拍球拍，140-195g之间的非常重量，总体球拍的52％至65％之间的头部重量来实现的 重量和重心位于相对于球拍头手柄端25mm之间，相对于远端头端75mm，沿球拍纵轴测量。 从球拍头手柄端延伸到球拍头部远端的壁球拍球拍的纵向排布置成发散以形成V形。 两个相邻的纵向弦线每个都被引导到球拍头把手端的公共位置。

    Tennis racket
    6.
    发明授权
    Tennis racket 失效
    网球拍

    公开(公告)号：US5540434A

    公开(公告)日：1996-07-30

    申请号：US569348

    申请日：1990-08-21

    Applicant: Frank Garrett, Jr. ,  Charles Tricou

    Inventor： Frank Garrett, Jr. ,  Charles Tricou

    IPC: A63B49/02 ,  A63B49/10

    CPC classification number: A63B49/02 ,  A63B2049/0203 ,  A63B2049/0204 ,  A63B2049/0207 ,  A63B2049/0211 ,  A63B2049/0212 ,  A63B2049/0217

    Abstract: A tennis racket includes a one piece integrally molded frame with a handle portion and a pair of beams which extend from the handle portion to the top of the racket. The height and width of each beam varies along the length of the beam. In addition, each beam has a maximum width and height at the bottom of the strung surface proximate the intersection of the beams and a frame cross piece.

    Abstract translation: 一种网球拍包括具有手柄部分的单件整体模制框架和从手柄部分延伸到球拍顶部的一对梁。 每个光束的高度和宽度沿着光束的长度而变化。 另外，每个光束在靠近光束和框架横截面的相交处的带状表面的底部具有最大宽度和高度。

    Tennis racket
    9.
    发明授权
    Tennis racket 有权
    网球拍

    公开(公告)号：US07137912B2

    公开(公告)日：2006-11-21

    申请号：US11135379

    申请日：2005-05-24

    Applicant: Takeshi Ashino ,  Kunio Niwa

    Inventor： Takeshi Ashino ,  Kunio Niwa

    IPC: A63B49/02

    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。

    Sports racket having a uniform string structure
    10.
    发明授权
    Sports racket having a uniform string structure 有权

    公开(公告)号：US07081056B2

    公开(公告)日：2006-07-25

    申请号：US09971830

    申请日：2001-10-04

    Applicant: Richard A. Brandt

    Inventor： Richard A. Brandt

    IPC: A63B49/02

    CPC classification number: A63B49/02 ,  A63B2049/0201 ,  A63B2049/0203 ,  A63B2049/0204 ,  A63B2049/0207 ,  A63B2060/002

    Abstract: A sports racket, for tennis and the like sports, has an elongated handle attached to a head having a racket face, which is spanned by a uniform string structure. The head has four sides, forming a non-elliptical shape, in which the opposite sides are substantially parallel. Longitudinal strings, all of which are substantially identical in length and run essentially parallel to each other, and transversal strings, all of which are substantially identical in length and run essentially parallel to each other and perpendicular to the longitudinal axis, span the racket face. The racket has a larger racket face than conventional rackets, while maintaining the length and weight measurements of conventional rackets, resulting in a very large sweet spot and more good hits. The racket has maximally long strings at all points on the racket face and strings substantially identical in length at all points on the racket face resulting in a uniformity of response for off-center hits, an increase in the ball rebound speed, a decrease in angular deflection for off-center hits, and the ability to set the tension of the strings such that they vibrate with the same frequency. The racket has a greater moment of inertia than conventional rackets, resulting in reduced racket rotation and a reduction of injuries to players, such as “tennis elbow”.

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