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1. 发明授权

US5594290A Commutator brush 失效
标题翻译：换向器刷
公开(公告)号：US5594290A
公开(公告)日：1997-01-14
申请号：US473175
申请日：1995-06-07
申请人： Larry S. Shannon , David W. Welch , Daniel P. Bexten
发明人： Larry S. Shannon , David W. Welch , Daniel P. Bexten
IPC分类号： H01R39/26 , H02K23/20 , H02K13/10
CPC分类号： H01R39/26 , H02K23/20 , H02K5/145 , H02K2213/03
摘要： A multi-speed, direct current motor (120) incorporates a high speed (24) brush disposed between the low speed (22) and the common ground (26) brushes and having a non-arcuate end face (25) which, unlike the conventional arcuate brush end face (23,27), is not subject to speed-drift erosion. The non-arcuate end face (25) is configured of two offset surfaces (55,65 & 57,67) which intersect to provide a line of contact (43) between the end face (25) of the high speed brush (24) and the commutator (40) which is displaced from the center line of the high speed brush (24) in a direction counter to the direction of rotation of the motor, that is toward the leading edge (21) of the brush (24). The intersecting surfaces (55,65 & 57,67) may comprise either flat planar surfaces or contoured surfaces.
摘要翻译：多速直流电动机（120）包括设置在低速（22）和公共地面（26）电刷之间的高速（24）电刷，并且具有非弧形端面（25），其不同于常规弧形刷端面（23,27），不受速度漂移侵蚀。非弧形端面（25）由两个偏移表面（55,65和57,67）构成，它们相交以在高速电刷（24）的端面（25）之间提供接触线（43）以及与电动机的旋转方向相反的方向（即朝向电刷24的前缘21）从高速电刷24的中心线偏移的换向器40。相交表面（55,65和57,67）可以包括平坦平面或轮廓表面。

2. 发明授权

US5485049A Multi-speed motor 失效
标题翻译：多速电机
公开(公告)号：US5485049A
公开(公告)日：1996-01-16
申请号：US248777
申请日：1994-05-25
申请人： Larry S. Shannon , David W. Welch , Daniel P. Bexten
发明人： Larry S. Shannon , David W. Welch , Daniel P. Bexten
IPC分类号： H01R39/26 , H02K23/20 , H02K13/00
CPC分类号： H01R39/26 , H02K23/20 , H02K5/145 , H02K2213/03
摘要： A multi-speed, direct current motor (120) incorporates a high speed (24) brush disposed between the low speed (22) and the common ground (26) brushes and having a non-arcuate end face (25) which, unlike the conventional arcuate brush end face (23,27), is not subject to speed-drift erosion. The non-arcuate end face (25) is configured of two offset surfaces (55,65 & 57,67) which intersect to provide a line of contact (43) between the end face (25) of the high speed brush (24) and the commutator (40) which is displaced from the center line of the high speed brush (24) in a direction counter to the direction of rotation of the motor, that is toward the leading edge (21) of the brush (24). The intersecting surfaces (55,65 & 57,67) may comprise either flat planar surfaces or contoured surfaces.
摘要翻译：多速直流电动机（120）包括设置在低速（22）和公共地面（26）电刷之间的高速（24）电刷，并且具有非弧形端面（25），其不同于传统弧形刷端面（23,27），不受速度漂移侵蚀。非弧形端面（25）由两个偏移表面（55,65和57,67）构成，它们相交以在高速电刷（24）的端面（25）之间提供接触线（43）以及与电动机的旋转方向相反的方向（即朝向电刷24的前缘21）从高速电刷24的中心线偏移的换向器40。相交表面（55,65和57,67）可以包括平坦平面或轮廓表面。

3. 发明授权

US5568026A Synchronizing windshield wipers 失效
标题翻译：同步挡风玻璃刮水器
公开(公告)号：US5568026A
公开(公告)日：1996-10-22
申请号：US407838
申请日：1995-03-07
申请人： David W. Welch
发明人： David W. Welch
IPC分类号： B60S1/08 , H02P5/52
CPC分类号： B60S1/0814 , H02P5/56 , Y10S318/02
摘要： Two windshield wiper blades are powered by separate electric motors. The blades overlap and when one blade is at its reversal point the other blade leaves part as the other blade begins to return to park. The position of the blades is encoded. The blades, if synchronized should be at identical locations and position codes at the same time. Motor power to the blade that arrives first is be removed, allowing the blade to coast. If the other blade still does not arrive at the position after an elapsed time, the first to arrive blade is dynamically braked. Intermittent wiper operation is provided in a way that initiates an immediate wipe if wiper delay is changed while the blades are parked.
摘要翻译：两个挡风玻璃刮水片由独立的电动机驱动。叶片重叠，当一个叶片处于其反转点时，另一个叶片随着另一个叶片开始返回停止而离开部分。刀片的位置被编码。刀片如果同步，应同时位于相同的位置和位置代码。首先到达叶片的电机功率被去除，允许叶片滑行。如果另一个刀片在经过一段时间后仍然没有到达位置，则第一个到达刀片是动态制动的。提供间歇式刮水器操作，以便在叶片停放时刮水器延时更改时启动即时擦拭。

4. 发明授权

US5486747A General purpose motor controller 失效
标题翻译：通用电机控制器
公开(公告)号：US5486747A
公开(公告)日：1996-01-23
申请号：US99669
申请日：1993-07-29
申请人： David W. Welch
发明人： David W. Welch
IPC分类号： H02P6/00 , H02P7/00 , H02P7/28 , H02P7/29 , H02P5/28
CPC分类号： H02P7/28 , H02P6/00 , H02P7/281 , H02P7/29
摘要： A general purpose or universal motor control is constructed as integrated circuit using a plurality of state machines and memories. The specific characteristics of a motor are programmed into a programmable "features" memory. A lookup table contains parameters for operating the motor that are accessed as a function of the features. The features memory and the lookup table may be programmed and tested through a communications state machine. External and internal pulse width modulation is provided along with dynamic braking as options that are utilized by the state machines depending upon the features. A multiplexer acts a switch between the state machines, the memories and the motor drive.
摘要翻译：通用或通用电动机控制构造为使用多个状态机和存储器的集成电路。电机的具体特性被编程到可编程的“特征”存储器中。查找表包含用于根据功能访问的用于操作电机的参数。特征存储器和查找表可以通过通信状态机进行编程和测试。提供外部和内部脉冲宽度调制以及动态制动作为根据特征由状态机使用的选项。多路复用器在状态机，存储器和电机驱动器之间进行切换。

5. 发明授权

US4664217A Electric shift actuator for vehicle transfer case 失效
标题翻译：车用传动箱用电动换挡执行机构
公开(公告)号：US4664217A
公开(公告)日：1987-05-12
申请号：US686120
申请日：1984-12-24
申请人： David W. Welch , Carl G. Czarnecki , Joseph DiTucci
发明人： David W. Welch , Carl G. Czarnecki , Joseph DiTucci
IPC分类号： B60K17/344 , B60K23/08 , B60R16/02 , B60R16/023 , F16H61/32 , F16H63/18 , F16H63/30
CPC分类号： B60R16/023 , B60K17/344 , B60K23/0808 , F16H61/32 , F16H63/18 , F16H2063/3056 , F16H63/304 , Y10T477/26 , Y10T74/19279
摘要： A shift actuator for a vehicle transfer case includes a bidirectional electric motor for positioning gearing in the transfer case. An indicator mechanism associated with the drive train between the motor and the transfer case provides electrical signals indicative of the actual position in, and thus operating state, of the gearing in the transfer case. A selector switch provides electrical signals indicative of a desired operating state of the transfer case gearing. An electronic control is responsive to an input from the selector switch and to the indicator mechanism for effecting rotation of the motor in a predetermined one or other direction to attain the desired operating state. The indicator mechanism includes a contact plate, which rotates with the drive train, and a set of stationary contacts. A conductive pattern on the contact plate identifies the positioning of the operating states of the transfer case gearing. Signals indicating the condition of the vehicle, as its speed and the state of its transmission, serve to allow or to inhibit certain responses to certain selected states of the transfer case gearing.
摘要翻译：用于车辆传送箱的换档致动器包括用于将传动装置定位在传送箱中的双向电动马达。与电动机和转移箱之间的传动系相关联的指示器机构提供指示传动箱中的传动装置的实际位置以及因此操作状态的电信号。选择器开关提供指示传送箱传动装置的期望操作状态的电信号。电子控制器响应于来自选择器开关和指示器机构的输入，用于在预定的一个或另一个方向上实现电动机的旋转以获得期望的操作状态。指示器机构包括与传动系一起旋转的接触板和一组固定触点。接触板上的导电图案识别传送箱传动装置的操作状态的定位。指示车辆的状态的信号，因为其速度和其传输状态用于允许或抑制对转移箱齿轮传动装置的某些选定状态的某些响应。

6. 发明授权

US06247980B1 Self cleaning trolling motor 失效
标题翻译：自清洁拖钓电机
公开(公告)号：US06247980B1
公开(公告)日：2001-06-19
申请号：US09560481
申请日：2000-04-28
申请人： Prentice G. Moore , William A. Henderson , David W. Welch
发明人： Prentice G. Moore , William A. Henderson , David W. Welch
IPC分类号： B63H128
CPC分类号： B63H20/007
摘要： This invention relates to a trolling motor which includes a control system capable of executing a predetermined sequence of events which will clear entangled weeds from the propeller, motor housing, and support column. The control system for the trolling motor provides momentary reversal of the propeller to accomplish reliable cleaning of the submerged components of the trolling motor without disturbing the operator selected forward speed. The system includes an input for manually activating a cleaning cycle, for periodically activating cleaning cycles, or for automatically activating a cleaning cycle upon detection of weed fouling of the submerged components.
摘要翻译：本发明涉及一种牵引电动机，其包括能够执行预定顺序的事件的控制系统，其将清除来自螺旋桨，电动机壳体和支撑柱的纠缠杂草。拖钓电机的控制系统提供螺旋桨的瞬时反转，以完成对拖钓电机的淹没部件的可靠清洁，而不会干扰操作者所选择的前进速度。该系统包括用于手动启动清洁循环的输入，用于周期性地启动清洁循环，或者在检测到浸没的部件的杂草结垢时自动启动清洁循环。

7. 发明授权

US5216340A Dual windshield wiper motor synchronization 失效
标题翻译：双挡风玻璃刮水器电机同步
公开(公告)号：US5216340A
公开(公告)日：1993-06-01
申请号：US850611
申请日：1992-03-13
申请人： David W. Welch
发明人： David W. Welch
IPC分类号： B60S1/08
CPC分类号： B60S1/0814 , Y10S318/02
摘要： A windshield wiper system has two motors. Each propels its own wiper blade. A blade parking disk is attached to each motor and contains a conductive and a non-conductive segment. Electrical power supplied through the conductive segment to the motor from a "parking contact", is interrupted by the non-conductive segment, parking the blade. During normal operation, the voltage change on the "parking contact" is sensed for each motor to determine if one motor is faster than the other. If the speed difference exceeds a set level, power to the faster motor is interrupted for a preset time interval during each rotation of the parking disk, until the difference is less than the set level. The voltage on the parking contact is also sensed for the higher voltage produced if the motors are operating at high speed. If the motors are operating at high speed, the preset time interval is increased and the allowable speed difference is reduced.
摘要翻译：挡风玻璃刮水器系统有两个电机。每个推进自己的雨刮片。叶片停车盘连接到每个马达并且包含导电段和非导电段。从“停车触点”通过导电段供电到电动机的电力被非导电段中断，停止叶片。在正常操作期间，为每个电机检测“停车触点”上的电压变化，以确定一个电机是否比另一个更快。如果速度差超过设定水平，则在驻车盘的每次旋转期间，以较快的电动机的电力中断预设的时间间隔，直到差值小于设定的水平。如果电动机高速运转，也会检测停车触点的电压，以获得更高的电压。如果电机高速运转，预设时间间隔增加，容许速度差减小。

8. 发明授权

US4720663A Brushless motor speed control 失效
标题翻译：无刷电机调速
公开(公告)号：US4720663A
公开(公告)日：1988-01-19
申请号：US846397
申请日：1986-03-31
申请人： David W. Welch , Dennis R. McCully
发明人： David W. Welch , Dennis R. McCully
IPC分类号： H02P6/14 , H02P6/02
CPC分类号： H02P6/15
摘要： A brushless DC motor control circuit for efficiently controlling motor speed is described. A digital circuit for providing centered pulse turn-on during that period when the specific winding is capable of providing torque for the desired direction of rotation to the rotor is described. Each phase has its own timing circuit including an initial delay-time interval and an on-time interval. These time intervals are set to obtain desired motor speed and efficient motor operation.
摘要翻译：描述了一种用于有效控制电动机速度的无刷直流电动机控制电路。描述了一种数字电路，用于在该特定绕组能够向转子提供期望的旋转方向的转矩时在该期间提供居中脉冲导通。每相具有其自己的定时电路，其包括初始延迟时间间隔和导通时间间隔。这些时间间隔被设置为获得所需的电动机速度和高效的电动机操作。

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