公开(公告)号：US10709952B2

公开(公告)日：2020-07-14

申请号：US13313376

申请日：2011-12-07

申请人： Ian Shwartzman

发明人： Ian Shwartzman

IPC分类号： A63B69/38 ,  A63B60/04 ,  A63B65/12 ,  A63B21/00 ,  F41B3/04 ,  A63B71/06 ,  A63B60/34 ,  A63B60/16 ,  A63B59/20

摘要： A tennis stoke practice device comprises a tube comprising a first end, a second end and a hollow interior. The first end and the second end are operable for joining of accessories. A grip-bud is removably joinable to the first end. The grip-bud is configured to close the hollow interior at the first end. A grip is joined to the tube to abut the grip-bud. The grip-bud and grip comprise an octagonal shape. A movable insert is configured for projectile movement through the hollow interior in which, during a desired swing of the device, a longitudinal axis of the movable insert is substantially aligned with a longitudinal axis of the hollow interior. During an undesired swing of the device, the longitudinal axis of the movable insert rotates out of alignment with the longitudinal axis of the hollow interior.

公开(公告)号：US20120264550A1

公开(公告)日：2012-10-18

申请号：US13313376

申请日：2011-12-07

申请人： Ian Shwartzman

发明人： Ian Shwartzman

IPC分类号： A63B69/38

CPC分类号： A63B69/38 ,  A63B15/005 ,  A63B21/0004 ,  A63B21/4021 ,  A63B21/4035 ,  A63B59/20 ,  A63B60/04 ,  A63B60/16 ,  A63B60/34 ,  A63B65/122 ,  A63B2071/0625 ,  A63B2209/08 ,  A63B2210/50 ,  F41B3/04

摘要： A tennis stoke practice device comprises a tube comprising a first end, a second end and a hollow interior. The first end and the second end are operable for joining of accessories. A grip-bud is removably joinable to the first end. The grip-bud is configured to close the hollow interior at the first end. A grip is joined to the tube to abut the grip-bud. The grip-bud and grip comprise an octagonal shape. A movable insert is configured for projectile movement through the hollow interior in which, during a desired swing of the device, a longitudinal axis of the movable insert is substantially aligned with a longitudinal axis of the hollow interior. During an undesired swing of the device, the longitudinal axis of the movable insert rotates out of alignment with the longitudinal axis of the hollow interior.

摘要翻译： 一种网球练习装置包括一个包括第一端，第二端和中空内部的管。 第一端和第二端可操作用于连接附件。 握把可拆卸地连接到第一端。 夹头构造成在第一端处封闭中空内部。 把手与管​​接合以抵靠握柄。 握柄和握把包括八角形。 可移动插入件构造成用于通过中空内部的射弹移动，其中在所述装置的期望摆动期间，可移动插入件的纵向轴线基本上与中空内部的纵向轴线对准。 在装置的不期望的摆动期间，可移动插入件的纵向轴线与中空内部的纵向轴线不对准。

公开(公告)号：US20110118061A1

公开(公告)日：2011-05-19

申请号：US12590828

申请日：2009-11-16

申请人： Ian Shwartzman

发明人： Ian Shwartzman

IPC分类号： A63B69/38 ,  A41D20/00

CPC分类号： A63B69/00 ,  A63B69/3608 ,  A63B69/3614 ,  A63B69/38

摘要： A Laser Toss Assist is a wristband with a distinguish colored line on a back surface coming from one end to another and flexible plastic tube having a laser pointer device inside. A flexible plastic tube attached to an inner, upper side, straight under a colored line of a wristband. When Laser Toss Assist on a tossing hand can be seen a laser spot on a ball in time of a tossing action for control of direction, proper ball position, timing of a serve, palm and fingers position, body movements and successful serve. A wristband colored line makes visible and imaginable straight line going through a hand, wrist, laser beam and a ball in time of tossing action. When Laser Toss Assist on a hitting hand possible practice a hand and eyes control by quick point a laser spot on a target.

摘要翻译： 激光削波辅助是在从一端到另一端的背面上具有区别的彩色线的腕带，以及在其内部具有激光指示器装置的柔性塑料管。 一个柔软的塑料管，连接到内侧，上侧，在腕带的彩色线下方直线。 当抛掷手上的激光辅助辅助时，可以看到激光点在抛掷动作的时间上，用于控制方向，适当的球位置，服务时间，手掌和手指位置，身体动作和成功的服务。 腕带彩色线条可以让人看到和想象中的直线穿过手，手腕，激光束和球。 当激光灼伤辅助手可能通过快速点瞄准目标上的激光点来练习手和眼睛控制。