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    Electrostatic grids
    2.
    发明授权
    Electrostatic grids 失效
    静电网

    公开(公告)号：US3641976A

    公开(公告)日：1972-02-15

    申请号：US3641976D

    申请日：1970-08-05

    申请人： INDEV INC

    发明人： CORNEAU GEORGE E

    IPC分类号： B05C19/00 ,  B05C5/02

    CPC分类号： B05C19/002

    摘要： An electrostatic grid, especially useful in a flocking machine, has an exposed portion providing a corona which prevents flock from accumulating on the grid.

    摘要翻译： 在植绒机中特别有用的静电栅格具有提供电晕的暴露部分，防止绒毛积聚在网格上。

    Magnetic thickness gauge with a gas-supported sensor and a suction source in the base
    3.
    发明授权
    Magnetic thickness gauge with a gas-supported sensor and a suction source in the base 失效
    具有气体支持传感器和吸收源的磁性厚度计

    公开(公告)号：US3617872A

    公开(公告)日：1971-11-02

    申请号：US3617872D

    申请日：1969-10-06

    申请人： INDEV INC

    发明人： HORN JOHN J ,  CORNEAU GEORGE E

    IPC分类号： G01R33/12

    CPC分类号： G01B7/107 ,  G01B2210/62

    摘要： In an apparatus for measuring the thickness of material including a magnetic sensor forming an incomplete magnetic circuit, a gas source, structure defining a gas-confining chamber in communication with said gas source providing a gas cushion on the top surface of said material for supporting the sensor a fixed distance above the top surface of said material, and readout means for producing a signal dependent on relative vertical sensor movement, the improvement comprising material support structure including a supporting member formed of magnetic material to complete a magnetic circuit with the sensor, and providing a flat supporting surface located opposite the sensor and contacting the underside of the material, a suction source, and structure providing communication between the suction source and the underside of the material adjacent said flat supporting surface to maintain the underside of the material flush against the flat supporting circuit such that parameters of the magnetic circuit due to the distance between the sensor and the magnetic supporting member are dependent solely on the thickness of the material.