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14 条记录 (耗时 0.039 秒)

    Low profile electric sander
    1.
    发明授权
    Low profile electric sander 有权
    薄型电动砂光机

    公开(公告)号：US07318768B2

    公开(公告)日：2008-01-15

    申请号：US11103928

    申请日：2005-04-12

    申请人： Uday S. Deshpande ,  Bhanuprasad V. Gorti ,  Jason R. Melvin ,  Gregory A. Rice ,  David Wikle ,  Shailesh P. Waikar ,  William F. Hilsher

    发明人： Uday S. Deshpande ,  Bhanuprasad V. Gorti ,  Jason R. Melvin ,  Gregory A. Rice ,  David Wikle ,  Shailesh P. Waikar ,  William F. Hilsher

    IPC分类号： B49B49/00 ,  B51B51/00 ,  B24B23/04

    CPC分类号： B24B23/03

    摘要： A power tool is a “low profile” power tool, that is the overall height of the power tool is sufficiently small that a user can grasp the top of the power tool with the user's hand and the hand will be positioned relative close to the bottom of the power tool compared with existing power tools. The low profile power tool uses a low profile motor having a diameter to lamination height ratio of at least 2:1. In an aspect of the invention, the motor is an electronically commutated “pancake” style motor. In an aspect of the invention, the power tool is a random orbital sander or an orbital sander having a motor that provides at least 40 watts of power. In an aspect of the invention, the sander has a mechanical brake that brakes the orbital mechanism and the motor is dynamically braked.

    摘要翻译： 电动工具是“薄型”电动工具，即电动工具的整体高度足够小，使得用户可以用用户的手抓住电动工具的顶部，并且手将相对靠近底部定位 的电动工具与现有的电动工具相比。 低轮廓动力工具使用具有至少2:1的直径与层压高度比的低轮廓马达。 在本发明的一个方面，电动机是电子换向的“煎饼”型电动机。 在本发明的一个方面，电动工具是随机轨道打磨机或具有提供至少40瓦特功率的电动机的轨道磨光机。 在本发明的一个方面，砂光机具有制动轨道机构的机械制动器，并且马达被动态地制动。

    Electric sander and motor control therefor
    2.
    发明授权
    Electric sander and motor control therefor 有权
    电动砂光机和电机控制

    公开(公告)号：US07270591B2

    公开(公告)日：2007-09-18

    申请号：US11103929

    申请日：2005-04-12

    申请人： Uday S. Deshpande ,  Bhanuprasad V. Gorti ,  Shailesh P. Waikar ,  William F. Hilsher

    发明人： Uday S. Deshpande ,  Bhanuprasad V. Gorti ,  Shailesh P. Waikar ,  William F. Hilsher

    IPC分类号： B24B49/00

    CPC分类号： B24B23/03

    摘要： A hand held orbital sander has a housing having an electronically commutated motor disposed therein and an orbit mechanism disposed beneath the housing. A motor controller is coupled to the motor. The motor controller changes the speed of at which it runs the motor from an idle speed to a sanding speed upon the motor speed dropping from idle speed to an idle speed threshold value and changes the speed at which it runs the motor from sanding speed to idle speed upon the motor speed increasing from sanding speed to a sanding speed threshold value. The sander may have a mechanical brake that brakes the orbit mechanism and the motor controller also dynamically brakes the motor.

    摘要翻译： 手持轨道式打磨机具有设置在其中的电子换向马达的壳体和设置在壳体下方的轨道机构。 马达控制器耦合到马达。 电动机控制器将电机从怠速运行的速度从怠速转速到打磨速度，将其从怠速转速降至怠速阈值，并将其运行电机的速度从打磨速度改变为空转 电机速度从砂磨速度增加到砂磨速度阈值。 砂光机可以具有制动轨道机构的机械制动器，并且马达控制器还动态地制动马达。

    Electric sander and motor control therefor
    3.
    发明授权
    Electric sander and motor control therefor 有权
    电动砂光机和电机控制

    公开(公告)号：US07371150B2

    公开(公告)日：2008-05-13

    申请号：US11747655

    申请日：2007-05-11

    申请人： Uday S. Deshpande ,  Bhanuprasad V. Gorti ,  Shailesh P. Waikar ,  William F. Hilsher

    发明人： Uday S. Deshpande ,  Bhanuprasad V. Gorti ,  Shailesh P. Waikar ,  William F. Hilsher

    IPC分类号： B24B49/00

    CPC分类号： B24B23/03

    摘要： A hand held orbital sander has a housing having an electronically commutated motor disposed therein and an orbit mechanism disposed beneath the housing. A motor controller is coupled to the motor. The motor controller changes the speed of at which it runs the motor from an idle speed to a sanding speed upon the motor speed dropping from idle speed to an idle speed threshold value and changes the speed at which it runs the motor from sanding speed to idle speed upon the motor speed increasing from sanding speed to a sanding speed threshold value. The sander may have a mechanical brake that brakes the orbit mechanism and the motor controller also dynamically brakes the motor.

    摘要翻译： 手持轨道式打磨机具有设置在其中的电子换向马达的壳体和设置在壳体下方的轨道机构。 马达控制器耦合到马达。 电动机控制器将电机从怠速运行的速度从怠速转速到打磨速度，将其从怠速转速降至怠速阈值，并将其运行电机的速度从打磨速度改变为空转 电机速度从砂磨速度增加到砂磨速度阈值。 砂光机可以具有制动轨道机构的机械制动器，并且马达控制器还动态地制动马达。

    Battery charger
    4.
    发明授权
    Battery charger 有权
    充电器

    公开(公告)号：US07570011B2

    公开(公告)日：2009-08-04

    申请号：US11399948

    申请日：2006-04-07

    申请人： Shailesh P. Waikar ,  Bhanuprasad V. Gorti

    发明人： Shailesh P. Waikar ,  Bhanuprasad V. Gorti

    IPC分类号： H02J7/14

    CPC分类号： H02J7/0072 ,  H02J7/0055 ,  H02J7/022 ,  H02J2007/0059 ,  H02M3/1584

    摘要： A charger including a power supply connectable to an outside power source, first and second battery power sources connected to the power supply for providing power to a battery pack, and a controller connected to the first and second battery power sources for controlling the first and second battery power sources. The first and second battery power sources are preferably connected in parallel to the battery.

    摘要翻译： 一种充电器，包括可连接到外部电源的电源，连接到电源以向电池组提供电力的第一和第二电池电源，以及连接到第一和第二电池电源的控制器，用于控制第一和第二电池 电池电源。 第一和第二电池电源优选地与电池并联连接。

    Electronically commutated motor and control system employing phase angle control of phase current
    6.
    发明授权
    Electronically commutated motor and control system employing phase angle control of phase current 有权
    电子换向电机和控制系统采用相电流相位角控制

    公开(公告)号：US07821217B2

    公开(公告)日：2010-10-26

    申请号：US11751790

    申请日：2007-05-22

    申请人： Mehdi Abolhassani ,  Shailesh P. Waikar ,  Ren H. Wang ,  Uday S. Deshpande

    发明人： Mehdi Abolhassani ,  Shailesh P. Waikar ,  Ren H. Wang ,  Uday S. Deshpande

    IPC分类号： H02P7/00

    CPC分类号： H02P6/153 ,  H02P21/0089

    摘要： A power tool may include an electronically commutated motor such as, for example, a brushless DC permanent magnet motor with a rotor having internally mounted magnets and/or cavities filled with air or other non-magnetic materials. A control system may be used to control the motor in a manner that implements field weakening when the speed of the motor increases beyond its rated motor speed, or when the torque demands on the motor continue to increase after the maximum power output of the motor is reached. The field weakening may offset the growing back EMF and may enable a constant power and constant efficiency to be achieved by the motor over a wide speed range, rather than at just a single predetermined operating speed. Pulse width modulation control of the motor may be used up until the motor reaches its maximum power output.

    摘要翻译： 电动工具可以包括电子换向电动机，例如具有内部安装的磁体和/或填充有空气或其它非磁性材料的空腔的转子的无刷直流永磁电动机。 可以使用控制系统来控制电动机，当电动机的速度超过其额定电动机速度时，或当电机的最大功率输出为 到达。 磁场弱化可以抵消增长的反电动势，并且可以使电动机在宽的速度范围内实现恒定的功率和恒定的效率，而不仅仅是单个预定的操作速度。 电机的脉宽调制控制可能会被使用，直到电机达到其最大功率输出。

    ELECTRONICALLY COMMUTATED MOTOR AND CONTROL SYSTEM EMPLOYING PHASE ANGLE CONTROL OF PHASE CURRENT
    7.
    发明申请
    ELECTRONICALLY COMMUTATED MOTOR AND CONTROL SYSTEM EMPLOYING PHASE ANGLE CONTROL OF PHASE CURRENT 有权
    采用相位电流相位角控制的电子式电动机和控制系统

    公开(公告)号：US20070267990A1

    公开(公告)日：2007-11-22

    申请号：US11751790

    申请日：2007-05-22

    申请人： Mehdi Abolhassani ,  Shailesh P. Waikar ,  Ren H. Wang ,  Uday S. Deshpande

    发明人： Mehdi Abolhassani ,  Shailesh P. Waikar ,  Ren H. Wang ,  Uday S. Deshpande

    IPC分类号： H02P7/00

    CPC分类号： H02P6/153 ,  H02P21/0089

    摘要： A power tool may include an electronically commutated motor such as, for example, a brushless DC permanent magnet motor with a rotor having internally mounted magnets and/or cavities filled with air or other non-magnetic materials. A control system may be used to control the motor in a manner that implements field weakening when the speed of the motor increases beyond its rated motor speed, or when the torque demands on the motor continue to increase after the maximum power output of the motor is reached. The field weakening may offset the growing back EMF and may enable a constant power and constant efficiency to be achieved by the motor over a wide speed range, rather than at just a single predetermined operating speed. Pulse width modulation control of the motor may be used up until the motor reaches its maximum power output.

    摘要翻译： 电动工具可以包括电子换向电动机，例如具有内部安装的磁体和/或填充有空气或其它非磁性材料的空腔的转子的无刷直流永磁电动机。 可以使用控制系统来控制电动机，当电动机的速度超过其额定电动机速度时，或当电机的最大功率输出为 到达。 磁场弱化可以抵消增长的反电动势，并且可以使电动机在宽的速度范围内实现恒定的功率和恒定的效率，而不仅仅是单个预定的操作速度。 电机的脉宽调制控制可能会被使用，直到电机达到其最大功率输出。

    Power tool anti-kickback system with rotational rate sensor
    8.
    发明授权
    Power tool anti-kickback system with rotational rate sensor 有权
    具有转速传感器的电动工具防反冲系统

    公开(公告)号：US07410006B2

    公开(公告)日：2008-08-12

    申请号：US11254146

    申请日：2005-10-19

    申请人： Qiang Zhang ,  Uday Deshpande ,  Shailesh P. Waikar ,  Daniel Puzio ,  Craig Schell ,  William F. Hilsher ,  Joshua D. West

    发明人： Qiang Zhang ,  Uday Deshpande ,  Shailesh P. Waikar ,  Daniel Puzio ,  Craig Schell ,  William F. Hilsher ,  Joshua D. West

    IPC分类号： E21B15/04

    CPC分类号： B25B21/00 ,  B23D59/001 ,  B25F5/00

    摘要： A control system is provided for use in a power tool. The control system includes: a rotational rate sensor having a resonating mass and a controller electrically connected to the rotational rate sensor. The rotational rate sensor detects lateral displacement of the resonating mass and generates a signal indicative of the detected lateral displacement, such that the lateral displacement is directly proportional to a rotational speed at which the power tool rotates about an axis of the rotary shaft. Based on the generated signal, the controller initiates a protective operation to avoid further undesirable rotation of the power tool. The control scheme employed by the power tool may initiate different protective operations for different tool conditions.

    摘要翻译： 提供一种用于电动工具的控制系统。 控制系统包括：具有谐振质量的旋转速率传感器和与旋转速率传感器电连接的控制器。 旋转速率传感器检测共振体的横向位移并产生表示检测到的横向位移的信号，使得横向位移与动力工具围绕旋转轴的轴线旋转的转速成正比。 基于产生的信号，控制器启动保护操作以避免电动工具的进一步不希望的旋转。 电动工具采用的控制方案可以针对不同的工具条件启动不同的保护操作。