Electrical apparatus for minimizing polarization of conductivity cell electrodes
    13.
    发明授权
    Electrical apparatus for minimizing polarization of conductivity cell electrodes 失效
    用于最小化电导池电极极化的电气设备

    公开(公告)号:US3879657A

    公开(公告)日:1975-04-22

    申请号:US42708273

    申请日:1973-12-21

    Applicant: ECONOMICS LAB

    CPC classification number: G01R27/22 G01N27/04 G01R27/02

    Abstract: Electrical apparatus for reducing the drift in the set point of an electrical bridge type conductivity sensor utilizing a pulse producing circuit (e.g. an astable multivibrator type switching device) to provide an AC voltage of very short duration to the conductivity cell electrodes for minimizing the cumulative polarization thereof. Pulse lengthening circuitry is also provided to assure that the relatively short output pulses from the bridge circuit are of sufficient duration to properly operate apparatus for injecting an additive product into the conductive medium.

    Abstract translation: 电气设备,用于利用脉冲发生电路(例如,非稳定的多谐振荡器型开关装置)减小电桥式电导率传感器的设定点的漂移,以向导电单元电极提供非常短的持续时间的AC电压,以最小化累积极化 其中。 还提供脉冲延长电路以确保来自桥接电路的相对短的输出脉冲具有足够的持续时间以适当地操作用于将添加剂产品注入到导电介质中的装置。

    Apparatus and method for processing workpieces
    16.
    发明授权
    Apparatus and method for processing workpieces 失效
    装置和加工工艺的方法

    公开(公告)号:US3578002A

    公开(公告)日:1971-05-11

    申请号:US3578002D

    申请日:1969-09-25

    Applicant: ECONOMICS LAB

    CPC classification number: B65G49/0418

    Abstract: Apparatus for processing (e.g., cleaning, degreasing) workpieces which are supplied to the apparatus in containers or tote boxes includes a frame for removably engaging the tote box and means for continuously rotating the frame so that the workpieces are progressively and gently dumped into a perforated processing chamber and subsequently returned to the tote box. The processing chamber comprises a first inclined surface for receiving and spreading the dumped workpieces into a less confined area upon the partial rotation of the frame (whereupon the processing of parts may be commenced) and a second inclined surface for returning the processed workpieces to the tote box upon the further rotation of the frame. Methods for such processing, as well as carousel and conveyor systems incorporating such apparatus, are also disclosed.

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