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192 条记录 (耗时 0.016 秒)

    Measurement and control of fluid flow
    131.
    发明授权
    Measurement and control of fluid flow 失效
    流体流量的测量和控制

    公开(公告)号：US4003255A

    公开(公告)日：1977-01-18

    申请号：US617600

    申请日：1975-09-29

    申请人： Jordan Spencer

    发明人： Jordan Spencer

    IPC分类号： G01F1/20 ,  G01N11/12 ,  G01F1/28

    CPC分类号： G01F1/20 ,  G01N11/12 ,  Y10T137/7759

    摘要： An improved method and apparatus for measuring fluid flow and controlling fluid flow systems. The invention uses a magnetically responsive float normally resting in contact with a stop element positioned in the flow conduit, with magnetic means positioned upstream. The requisite increase of magnetic force to pull said float element from the stop element against the direction of fluid flow is related to the flow rate, thus serving to indicate same for metering or control purposes. Normally, the current to an electromagnet required to overcome the force of fluid flow is used as a measure of flow rate. This system can also be employed to determine fluid viscosity.

    摘要翻译： 一种用于测量流体流动并控制流体流动系统的改进的方法和装置。 本发明使用通常与定位在流动管道中的止动元件接触的磁响应浮子，磁性装置位于上游。 从止动元件拉动浮动元件抵抗流体流动方向所需的磁力的必要增加与流速相关，因此用于指示相同的计量或控制目的。 通常，使用克服流体流动力所需的电磁体的电流作为流量的量度。 该系统也可用于确定流体粘度。

    Intravenous flow control system
    132.
    发明授权
    Intravenous flow control system 失效
    静脉流量控制系统

    公开(公告)号：US3605741A

    公开(公告)日：1971-09-20

    申请号：US3605741D

    申请日：1969-06-09

    申请人： JORDAN L SPENCER

    发明人： SPENCER JORDAN L

    IPC分类号： A61M5/00 ,  A61M5/168 ,  A61M5/172 ,  G01F1/00 ,  G01F1/20 ,  G01F1/708

    CPC分类号： A61M5/16886 ,  A61M5/172 ,  G01F1/00 ,  G01F1/20 ,  G01F1/708 ,  Y10T137/8342

    摘要： THE PRESENT INVENTION DEALS WITH AN IMPROVED METHOD AND APPARATUS FOR MEASURING FLOW IN AN INTRAVENOUS FEEDING SYST EM OR OTHER FLUID FLOW SYSTEM CHARACTERIZED BY ITS LOW FLOW RATE. THE INVENTION UTILIZES THE TRANSIT TIME OR OSCILLATORY FREQUENCY OF A BALL OF FLOAT WHICH MOVES ALONG THE DIRECTION OF FLUID FLOW AND IS RETURNED TO ITS ORIGINAL POSITION BY ACTUATING A MAGNETIC RETURN SYSTEM AS ITS BREAKS A LIGHT BEAM OR OTHER SENSING SYSTEM. THE CYCLE IS REPEATED, WITH THE TRANSIT TIME OR OSCILLATORY FREQUENCY BEING RELATED TO RATE OR FLUID FLOW, AND THUS SERVING TO INDICATE SAME FOR CONTROL PURPOSES. THE FLOW TUBE BALL MEASURING UNIT PREFERABLY TAKES THE FORM OF A DISPOSABLE AND PREFERABLY STERILE INSERT INTO AN INTERVENOUS FEEDING SYSTEM.