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8 条记录 (耗时 0.022 秒)

    Motor speed control circuit
    1.
    发明授权
    Motor speed control circuit 失效
    电机速度控制电路

    公开(公告)号：US4011491A

    公开(公告)日：1977-03-08

    申请号：US560944

    申请日：1975-03-21

    申请人： Lawrence L. Grover ,  David L. Plangger

    发明人： Lawrence L. Grover ,  David L. Plangger

    IPC分类号： H02P7/29 ,  H02P5/00

    CPC分类号： H02P7/291 ,  Y10S388/902

    摘要： A speed-controlling circuit for controlling the rotational speed of a D.C. electric motor in which the electric current is supplied to the D.C. motor through a switching circuit which is periodically open for a predetermined fixed time interval. The switching circuit is controlled by electrical pulses having a repetition rate which varies in dependence upon the rotational speed of the motor, whereby to periodically interrupt the supply of current to the motor. SPThis is a continuation, of application

    摘要翻译： 一种用于控制直流电动机的转速的速度控制电路，其中通过周期性地打开预定的固定时间间隔的开关电路将电流提供给直流电动机。 开关电路由具有根据电动机的转速变化的重复频率的电脉冲控制，从而周期性地中断向电动机供电。

    Removable LCD and stand assembly
    5.
    发明授权
    Removable LCD and stand assembly 失效
    可拆卸LCD和支架组件

    公开(公告)号：US5793606A

    公开(公告)日：1998-08-11

    申请号：US410634

    申请日：1995-03-24

    申请人： William R. Cubbage ,  Eric D. Fuhs ,  Peter A. Ojeda ,  David L. Plangger ,  John P. Wagner

    发明人： William R. Cubbage ,  Eric D. Fuhs ,  Peter A. Ojeda ,  David L. Plangger ,  John P. Wagner

    IPC分类号： G06F1/16 ,  G06F1/18 ,  G06F1/20 ,  H05K7/00

    CPC分类号： G06F1/1601 ,  G06F1/1616 ,  G06F1/1632 ,  G06F1/1635 ,  G06F1/1654 ,  G06F1/1656 ,  G06F1/1658 ,  G06F1/1681 ,  G06F1/181 ,  G06F1/184 ,  G06F1/187 ,  G06F1/203 ,  G06F2200/1612

    摘要： A portable presentation system includes a portable personal computer with a removable LCD and a stand assembly for carrying the LCD in a detached position to enable the LCD to be viewed when detached from the portable personal computer. In accordance with an important aspect of the invention, the LCD display is formed with a hinge which enables the viewing angle of the display to be fully adjustable in both a detached and attached position. The LCD display system also includes a latching mechanism which enables the display to be latched to the computer housing in all positions, thus preventing inadvertent removal and perhaps damage to the display. The stand assembly includes a base for carrying the LCD in a detached position and enabling the LCD display to be latched thereto in all viewing angle positions while enabling the viewing angle to be varied. The stand also includes a connector that is adapted to mate with a connector on the LCD display. The connector on the stand assembly is connected to a cable, which, in turn, is connected to an adapter assembly. The adapter assembly is adapted to be latched to the portable personal computer and includes a connector for mating with a corresponding connector on the portable personal computer.

    摘要翻译： 便携式演示系统包括具有可拆卸LCD的便携式个人计算机和用于将LCD携带在分离位置的支架组件，以使得当与便携式个人计算机分离时能够观看LCD。 根据本发明的重要方面，LCD显示器形成有铰链，其能够使显示器的视角在分离和附接位置都完全可调。 LCD显示系统还包括一个锁定机构，其使得显示器能够在所有位置被锁定到计算机外壳，从而防止意外的移除并可能损坏显示器。 支架组件包括用于在分离位置携带LCD的基座，并且使得LCD显示器能够在所有视角位置被锁定，同时能够使视角变化。 支架还包括一个连接器，适用于与LCD显示屏上的连接器配合。 支架组件上的连接器连接到电缆，电缆又连接到适配器组件。 适配器组件适于锁定到便携式个人计算机，并且包括用于与便携式个人计算机上的相应连接器配合的连接器。

    Directionally-adjustable antenna system using an outside mirror for automotive applications
    7.
    发明授权
    Directionally-adjustable antenna system using an outside mirror for automotive applications 有权
    定向可调式天线系统，使用汽车应用的外部镜

    公开(公告)号：US06861942B1

    公开(公告)日：2005-03-01

    申请号：US09359144

    申请日：1999-07-21

    申请人： Robert C. Knapp ,  David L. Plangger ,  Robert R. Turnbull

    发明人： Robert C. Knapp ,  David L. Plangger ,  Robert R. Turnbull

    IPC分类号： H01Q1/32 ,  H01Q21/28 ,  H03K17/00

    CPC分类号： B60C23/0408 ,  B60C23/0444 ,  H01Q1/3266 ,  H01Q1/3291 ,  H01Q21/28

    摘要： A vehicle antenna system incorporated into at least one side-view mirror of a vehicle includes a forward directed antenna and a rearward directed antenna to transmit and receive signals over corresponding forward and rearward-directed detection fields, respectively. The antennas act as directional transmitters and/or receivers, and a processing circuit discriminates between signals from different antennas without requiring any of the antennas to transmit identification signals to the processing circuit. Signal discrimination is conducted in part by sequentially selecting each antenna to obtain a corresponding antenna signal and, if required for a particular application, comparing the obtained signal with previously obtained antenna signals. The vehicle antenna system can be used, for example, in conjunction with tire pressure sensors to detect low tire pressure in a particular tire.

    摘要翻译： 并入车辆的至少一个侧视镜的车载天线系统包括前向天线和向后定向天线，用于分别在相应的前向和后向检测场上发送和接收信号。 天线作为定向发射机和/或接收机，并且处理电路鉴别来自不同天线的信号，而不需要任何天线将识别信号发送到处理电路。 部分地通过顺序选择每个天线以获得对应的天线信号进行信号鉴别，并且如果特定应用需要，将获得的信号与先前获得的天线信号进行比较。 车辆天线系统可以例如与轮胎压力传感器结合使用，以检测特定轮胎中的低轮胎压力。