Wheeled carriage having a powered auxiliary wheel, auxiliary wheel overtravel, and an auxiliary wheel drive and control system
    2.
    发明授权
    Wheeled carriage having a powered auxiliary wheel, auxiliary wheel overtravel, and an auxiliary wheel drive and control system 有权
    具有动力辅助轮,辅助轮超行程以及辅助轮驱动和控制系统的轮式车架

    公开(公告)号:US06752224B2

    公开(公告)日:2004-06-22

    申请号:US10086012

    申请日:2002-02-28

    IPC分类号: B62D6110

    摘要: A wheeled carriage for supporting a patient in a substantially horizontal position includes a patient support having head and foot ends and a wheeled base supported by castered wheels. Auxiliary wheels are suspendably mounted on a wheel support structure with the axis of the auxiliary wheels spaced from a midpoint of the wheeled base. A control apparatus controls the wheel support structure to move the auxiliary wheels between a first deployed position whereat castered wheels at one end of the carriage are elevated from a floor surface, and a second stored position with the auxiliary wheels out of engagement with the floor surface. The wheeled carriage includes a drive motor for powering the auxiliary wheels. A drive member applies force to a load cell on the wheeled carriage. The load cell outputs a drive signal to drive the auxiliary wheels. An auxiliary wheel drive and control system accelerates or decelerates the carriage by comparing the drive signal with a threshold value that changes dependent on the velocity of the carriage.

    摘要翻译: 用于将患者支撑在基本水平的位置的轮式支架包括具有头部和脚部端部的患者支架以及由脚轮支撑的轮状基座。 辅助轮悬挂地安装在车轮支撑结构上,辅助车轮的轴线与轮式底座的中点隔开。 控制装置控制车轮支撑结构,以使辅助车轮在第一展开位置之间移动,在第一展开位置,托架的一端的脚轮从地板表面升高,而第二存放位置与辅助轮脱离与地板表面的接合 。 轮式滑架包括用于为辅助轮供电的驱动马达。 驱动构件向轮式滑架上的称重传感器施加力。 称重传感器输出驱动信号以驱动辅助轮。 辅助轮驱动和控制系统通过将驱动信号与取决于滑架速度而变化的阈值进行比较来加速或减速滑架。

    Signal processing
    4.
    发明授权
    Signal processing 失效
    信号处理

    公开(公告)号:US07412220B2

    公开(公告)日:2008-08-12

    申请号:US11114547

    申请日:2005-04-26

    IPC分类号: H04B1/10

    CPC分类号: H04S1/002

    摘要: Signal processing apparatus produces an audio signal suitable for conveying a psychoacoustic perception of a low frequency audio signal to a listener, the apparatus generates harmonics of the low frequency signal by shaping the waveform of the low frequency signal with respect to time and/or level. This may be achieved using a peak-hold generator and a rectifier, or using a peak-hold-decay generator.

    摘要翻译: 信号处理装置产生适于将低频音频信号的心理声学感知传递给收听者的音频信号,该装置通过对低频信号的波形相对于时间和/或电平进行整形来产生低频信号的谐波。 这可以使用峰值保持发生器和整流器,或使用峰值保持衰减发生器来实现。