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    Bobbin handling system
    1.
    发明授权
    Bobbin handling system 失效

    公开(公告)号：US3589498A

    公开(公告)日：1971-06-29

    申请号：US3589498D

    申请日：1969-09-18

    Applicant: LEESONA CORP

    Inventor： COWAN LARRY C ,  CRUICKSHANK DAVID G

    IPC: B65H67/06 ,  B65G43/00

    CPC classification number: B65H67/06 ,  B65H2701/31

    Abstract: A bobbin handling system in which bobbin carriers of an overhead conveyor receive various types of bobbins from delivery stations and deliver the bobbins to receiving stations. A control system includes a stationary fluid operated control unit at each of the stations and actuators for the control units on each of the carriers. As an actuator passes a control unit it causes operating fluid to be supplied to the control unit and then closes active fluid bleed ports if its carrier and the station are both in condition to either receive or deliver a particular type of bobbin, whereupon the control unit causes bobbins to be so delivered or received. Finally, the passing actuator causes the operating fluid to be shut off.

    Fluid flow control elements with area dividing inserts
    2.
    发明授权
    Fluid flow control elements with area dividing inserts 失效
    流体流量控制元件带有区域分隔插入件

    公开(公告)号：US3897041A

    公开(公告)日：1975-07-29

    申请号：US39012373

    申请日：1973-08-20

    Applicant: LEESONA CORP

    Inventor： COWAN LARRY C

    IPC: F15C3/04 ,  F16K31/365

    CPC classification number: F15C3/04 ,  Y10T137/86582

    Abstract: In order to provide fast response to control signals for modifying high pressure fluid flow paths such as air at 80 psi through large orifices by use of thin flexible diaphragms, a movable control element is positioned with two ends disposed between two thin impervious flexible diaphragms which can be deflected to move the element in opposite directions. Pressure chambers acting on each diaphragm cause the control element to move as a function of the differential pressure. In one pressure chamber positioned in alignment with one end of said control element is a valve nozzle through which the controlled fluid flows. Thus the control element may squeeze the diaphragm against the nozzle to control fluid flow in response to fluid input pressures. This basic control element is used variously as a flow amplifier, a threshold detector, a latching thyratron type relay, and a pressure divider, with the control element having opposite end contact surfaces of different area used to vary the ratios of differential pressure which may move the element into a valve control position. A further movable element is used as a biasing source to oppose the movement of the control element in proportion to fluid control pressure bearing thereupon. The ''''Not'''' function of inverting signals is achieved by overcoming the biased element tending to close a vented nozzle with an input signal to open the vent and reduce the pressure of the biasing source.

    Abstract translation: 为了对通过使用薄的柔性隔膜通过大孔口改变高压流体流路例如80psi的空气的控制信号提供快速响应，可移动的控制元件被定位成两端设置在两个薄的不可渗透的柔性隔膜之间， 偏转以沿相反方向移动元件。 作用在每个隔膜上的压力室使控制元件作为压差的函数而移动。 在与所述控制元件的一端对准的一个压力室中是受控流体流过的阀喷嘴。 因此，控制元件可以将隔膜挤压在喷嘴上，以响应于流体输入压力来控制流体流动。

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