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公开(公告)号：US20110171595A1
公开(公告)日：2011-07-14
申请号：US12900746
申请日：2010-10-08
IPC分类号： A61C3/00
摘要： The invention relates to an improved bur for use in handpieces having a rotatable chuck with a tool bore for receiving the bur, a friction grip member for frictionally retaining the bur in the chuck and a torque lock seat of non-circular cross-section and permitting length adjustment of the bur in the drive head by concentrically supporting the bur in the drive head at any position from a fully inserted position to a maximum retracted position. The bur includes a tool body having an axis of rotation, a working end for projecting from the handpiece and a driven end for insertion into the tool bore of the chuck. The driven end is a generally cylindrical shaft with a preselected outer circumference for fittingly engaging in the tool bore for concentric rotation of the driven end with the chuck. The shaft including a torque lock portion for fittingly and non-rotatably engaging the torque lock seat of the chuck. The torque lock portion has at least two flat surfaces circumferentially spaced apart by intermediate cylindrical mantle portions, for providing the locking portion with a cross-section including alternating circular and straight sections and fitting into the non-circular cross-section of the torque lock seat to prevent rotation of the torque lock portion in the torque lock seat. The circular sections have the same diameter as the outer diameter of the cylindrical shaft. A total area of the flat surfaces covers at least 0.001956 square inches and the circular sections extend over at least 30% of the outer circumference of the driven end. This maintains efficient torque transfer between the chuck and the tool and ensures concentricity of the bur in the handpiece to prevent undue vibration of the bur in the handpiece.
摘要翻译： 本发明涉及一种用于手持件的改进的毛刺，其具有带有用于接收毛坯的工具孔的可旋转卡盘，用于摩擦地保持卡盘中的毛刺的摩擦夹持件和非圆形横截面的扭矩锁定座，并允许 通过在从完全插入位置到最大缩回位置的任何位置同心地支撑驱动头中的钻头来驱动驱动头中的钻头的长度调节。 该钻头包括具有旋转轴线的工具主体，用于从手持件突出的工作端和用于插入卡盘的工具孔中的从动端。 从动端是具有预选的外圆周的大致圆柱形的轴，用于适配地接合在工具孔中，用于驱动端与卡盘同心旋转。 所述轴包括扭矩锁定部分，用于适配地且不能旋转地接合卡盘的扭矩锁定座。 扭矩锁定部分具有由中间圆柱形壁部分周向隔开的至少两个平坦表面，用于为锁定部分提供横截面，该横截面包括交替的圆形和直的部分，并且装配到扭矩锁定座的非圆形横截面 以防止转矩锁定部中的转矩锁定部的旋转。 圆形部分具有与圆柱形轴的外径相同的直径。 平坦表面的总面积至少为0.001956平方英寸，圆形部分延伸至从动端的外圆周的至少30％。 这保持卡盘和工具之间的有效的扭矩传递，并且确保手柄中的毛坯的同心度，以防止手柄中的毛刺的不适当的振动。
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公开(公告)号：US20100221679A1
公开(公告)日：2010-09-02
申请号：US12800216
申请日：2010-05-11
IPC分类号： A61C1/14
CPC分类号： B25G1/005 , A61B17/162 , A61C1/141 , A61C1/144 , A61C1/145 , A61C3/02 , B23B31/005 , B23B2260/0487
摘要： The invention relates to an improved dental tool drive arrangement for a handpiece with a drive head, the tool drive arrangement permitting length adjustment of the tool in the drive head by concentrically supporting the tool in the drive head at any position from a fully inserted position to a maximum retracted position. The tool drive arrangement preferably includes a tool and a rotatable tool supporting element for concentrically supporting the tool from the fully inserted to the maximum retracted position, the tool preferably including a maximum retraction indicator for indicating to a user when the tool has been retracted to the maximum retraction position. This provides a significant advantage over the prior art by allowing a user to adjust the exposed length of a rotatable tool, preferably a dental bur, without exceeding safe operating limits. The invention also relates to an improved drive spindle which allows depth adjustment of a tool in a dental handpiece while maintaining efficient torque transfer and concentricity during high speed rotation.
摘要翻译： 本发明涉及一种用于具有驱动头的手持件的改进的牙科工具驱动装置，该工具驱动装置允许通过在从完全插入位置到完全插入位置的任何位置同心地支撑工具在驱动头中的工具的长度调节 最大缩回位置。 工具驱动装置优选地包括工具和可旋转的工具支撑元件，用于将工具从完全插入到最大缩回位置同心地支撑，所述工具优选地包括最大缩回指示器，用于当工具已经缩回到 最大缩回位置。 这通过允许使用者在不超出安全操作限制的情况下调节可旋转工具（优选牙科钻头）的暴露长度来提供比现有技术更大的优点。 本发明还涉及一种改进的驱动主轴，其允许在牙齿手柄中的工具的深度调节，同时在高速旋转期间保持有效的扭矩传递和同心度。
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公开(公告)号：US20090325123A1
公开(公告)日：2009-12-31
申请号：US12472267
申请日：2009-05-26
IPC分类号： A61C1/14
CPC分类号： B25G1/005 , A61B17/162 , A61C1/141 , A61C1/144 , A61C1/145 , A61C3/02 , B23B31/005 , B23B2260/0487
摘要： The invention relates to an improved dental tool drive arrangement for a handpiece with a drive head, the tool drive arrangement permitting length adjustment of the tool in the drive head by concentrically supporting the tool in the drive head at any position from a fully inserted position to a maximum retracted position. The tool drive arrangement preferably includes a tool and a rotatable tool supporting element for concentrically supporting the tool from the fully inserted to the maximum retracted position, the tool preferably including a maximum retraction indicator for indicating to a user when the tool has been retracted to the maximum retraction position. This provides a significant advantage over the prior art by allowing a user to adjust the exposed length of a rotatable tool, preferably a dental bur, without exceeding safe operating limits. The invention also relates to an improved drive spindle which allows depth adjustment of a tool in a dental handpiece while maintaining efficient torque transfer and concentricity during high speed rotation.
摘要翻译： 本发明涉及一种用于具有驱动头的手持件的改进的牙科工具驱动装置，该工具驱动装置允许通过在从完全插入位置到完全插入位置的任何位置同心地支撑工具在驱动头中的工具的长度调节 最大缩回位置。 工具驱动装置优选地包括工具和可旋转的工具支撑元件，用于将工具从完全插入到最大缩回位置同心地支撑，所述工具优选地包括最大缩回指示器，用于当工具已经缩回到 最大缩回位置。 这通过允许使用者在不超出安全操作限制的情况下调节可旋转工具（优选牙科钻头）的暴露长度来提供比现有技术更大的优点。 本发明还涉及一种改进的驱动主轴，其允许在牙齿手柄中的工具的深度调节，同时在高速旋转期间保持有效的扭矩传递和同心度。
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公开(公告)号：US20090220911A1
公开(公告)日：2009-09-03
申请号：US11921860
申请日：2006-06-09
IPC分类号： A61C1/00
CPC分类号： B25G1/005 , A61B17/162 , A61C1/141 , A61C1/144 , A61C1/145 , A61C3/02 , B23B31/005 , B23B2260/0487
摘要： The invention relates to an improved dental tool drive arrangement for a hand-piece with a drive head, the tool drive arrangement permitting length adjustment of the tool in the drive head by concentrically supporting the tool in the drive head at any position from a fully inserted position to a maximum retracted position. The tool drive arrangement preferably includes a tool and a rotatable tool supporting element for concentrically supporting the tool from the fully inserted to the maximum retracted position, the tool preferably including a maximum retraction indicator for indicating to a user when the tool has been retracted to the maximum retraction position. This provides a significant advantage over the prior art by allowing a user to adjust the exposed length of a rotatable tool, preferably a dental bur, without exceeding safe operating limits. The invention also relates to an improved drive spindle which allows depth adjustment of a tool in a dental handpiece while maintaining efficient torque transfer and concentricity during high speed rotation.
摘要翻译： 本发明涉及一种用于具有驱动头的手持件的改进的牙科工具驱动装置，该工具驱动装置允许通过在从完全插入的任何位置同心地支撑工具在驱动头中的工具在驱动头中的长度调节 位置到最大缩回位置。 工具驱动装置优选地包括工具和可旋转的工具支撑元件，用于将工具从完全插入到最大缩回位置同心地支撑，所述工具优选地包括最大缩回指示器，用于当工具已经缩回到 最大缩回位置。 这通过允许使用者在不超出安全操作限制的情况下调节可旋转工具（优选牙科钻头）的暴露长度来提供比现有技术更大的优点。 本发明还涉及一种改进的驱动主轴，其允许在牙齿手柄中的工具的深度调节，同时在高速旋转期间保持有效的扭矩传递和同心度。
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