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    • 34. 发明授权
    • Lockable hitch pin
    • 可锁定连接针
    • US4526396A
    • 1985-07-02
    • US500190
    • 1983-06-01
    • Robert Mayer
    • Robert Mayer
    • B60D1/02
    • B60D1/025B60D1/02
    • A hitch pin comprising a cylindrical shaft portion, a head portion, a generally "C" shaped latch arm pivotally attached at one end to said head portion, said arm being rotatable between a closed position wherein the opposite end of said arm is positioned adjacent the bottom end of said shaft portion and an opened end wherein said other end has been swung away from the bottom of said shaft portion, and means positioned within said head portion for locking said arm in either of said opened position or said closed position, said means comprising a spring biased, spherical cam follower acting against a cam surface defined at the pivotal end of said arm and having a curved first portion and an outwardly extending, upwardly projecting planar second surface. The "C" shaped arms has means associated with it for remotely activicating said arm from a closed position to an opened position.
    • 一种挂钩销,其包括圆柱形轴部分,头部部分,在一端枢转地附接到所述头部的大致“C”形闩锁臂,所述臂可在闭合位置之间旋转,其中所述臂的相对端位于所述关闭位置 所述轴部的底端和开口端,其中所述另一端已经从所述轴部的底部摆动,以及位于所述头部内的装置,用于将所述臂锁定在所述打开位置或所述关闭位置中的任何一个处,所述装置 包括弹簧偏置的球形凸轮随动件,其作用于限定在所述臂的枢转端处的凸轮表面,并且具有弯曲的第一部分和向外延伸的向上突出的平面第二表面。 “C”形臂具有与其相关联的装置,用于将所述臂从关闭位置远程激活到打开位置。
    • 35. 发明授权
    • Flowrate control means
    • 流量控制装置
    • US4134423A
    • 1979-01-16
    • US829692
    • 1977-09-01
    • Robert Mayer
    • Robert Mayer
    • G05D7/06
    • G05D7/0635Y10T137/7759Y10T137/7761
    • In order to obtain very close control of the flowrate of a fluid through a conduit against a predetermined desired flowrate, a pulse generator is employed to produce pulses at a frequency representing the desired flowrate, and a flowmeter issues similar pulses representing the actual flowrate. First and second difference pulse streams are digitally derived to represent the difference by which the actual flowrate either exceeds or falls short of the desired flowrate, and these difference pulse streams are applied, respectively, to count down and count up inputs to an up/down counter. The instantaneous count held within the up/down counter is translated to an analog signal by a digital-to-analog converter, and the analog signal is applied to the input of a two-wire transmitter. The two-wire transmitter drives a valve-actuating motor, such as a d-c torquemotor, to correct the valve position as necessary to obtain and maintain the desired flowrate.
    • 为了以预定的期望流量获得非常接近的通过管道的流体流量的控制,采用脉冲发生器以表示所需流量的频率产生脉冲,并且流量计发出表示实际流量的类似脉冲。 数字地导出第一和第二差分脉冲流,以表示实际流量超过或低于期望流量的差异,并且这些差分脉冲流分别被施加以对输入进行递增计数和向上计数 计数器。 保持在上/下计数器内的瞬时计数由数模转换器转换为模拟信号,模拟信号被施加到双线发射器的输入端。 双线发射器驱动阀门执行电机,例如d-c转矩电机,以根据需要校正阀门位置,以获得并保持所需的流量。