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1. 发明授权

US4031758A Mass flowmeter 失效
标题翻译：质量流量计
公开(公告)号：US4031758A
公开(公告)日：1977-06-28
申请号：US645231
申请日：1975-12-29
申请人： Nobuo Doi
发明人： Nobuo Doi
IPC分类号： G01F1/78 , G01F1/34
CPC分类号： G01F1/785
摘要： A pressure-difference type mass flowmeter with constant volumetric recirculation effected by a pump, with an annular flow path having four junctions each having a spur path. One pair of the alternate spur paths serve as inlet and outlet of the fluid flow to be measured, while the other pair of the alternate spur paths are connected to the recirculation pump. Four sections of the annular flow path defined by the four junctions are each provided with static fluid pressure sensing point, and a transducer gives a readout of difference in average static pressures of one pair of the alternate sensing points and of the other pair of the alternate sensing points. This readout is linearly proportional to the fluid mass flow rate.
摘要翻译：具有由泵实现的具有恒定体积再循环的压力差型质量流量计，其环形流动路径具有每个具有刺入路径的四个结。一对替代的辅助路径用作要测量的流体流的入口和出口，而另一对替代的支路连接到再循环泵。由四个连接点限定的环形流路的四个部分均设有静态流体压力检测点，并且换能器给出一对交替检测点和另一对交替检测点的平均静压差的读数传感点。该读数与流体质量流量成线性比例。

2. 发明授权

US4155059A Circuit network showing proper equivalent impedance between two network terminals 失效
标题翻译：电路网络显示两个网络终端之间的正确等效阻抗
公开(公告)号：US4155059A
公开(公告)日：1979-05-15
申请号：US806461
申请日：1977-06-14
申请人： Nobuo Doi
发明人： Nobuo Doi
IPC分类号： H03H11/30 , H03H11/00
CPC分类号： H03H11/30
摘要： A circuit network with a pair of operational amplifiers and impedance elements, to show equivalent impedance, between two network terminals, of a value either well reduced or enlarged from the impedance of the impedance elements. The network may thus function as idealized diode when the impedance elements are diodes, or may be of large equivalent capacitance or inductance, as the impedance elements are capacitors or inductors.
摘要翻译：具有一对运算放大器和阻抗元件的电路网络，以在两个网络端子之间显示出与阻抗元件的阻抗相比较好地减小或扩大的值的等效阻抗。因此，当阻抗元件为二极管时，网络因此可以用作理想二极管，或者可能具有大的等效电容或电感，因为阻抗元件是电容器或电感器。

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