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    Electro-magnetic distance measuring apparatus
    1.
    发明授权
    Electro-magnetic distance measuring apparatus 失效
    电磁距离测量装置

    公开(公告)号：US3854133A

    公开(公告)日：1974-12-10

    申请号：US36428573

    申请日：1973-05-29

    Applicant: SOUTH AFRICAN INVENTIONS

    Inventor： CABION P

    IPC: G01S13/84 ,  G01S13/36 ,  G01S9/04

    CPC classification number: G01S13/36

    Abstract: In an electro-magnetic distance measuring instrument of the type in which a distance between two points is inferred from a knowledge of the transit time of an electro-magnetic wave by means of a series of phase measurements taken with waves of decreasing effective frequency, apparatus for automatically deriving a final distance from such a series of measurements. These phase measurements have two digits, are subject to errors and are taken with waves having effective frequencies related by powers of ten. The apparatus of the invention operates sequentially on measurements due to waves of decreasing effective frequency by adding a number which may be either four or five to, and subtracting the magnitude of the tens digit of the preceding measurement from a new measurement. This operation corrects the tens digit of the new measurement for any error which may have occurred during measuring, so that it can be used as one of the digits in the final result.

    Abstract translation: 在通过借助减少的有效频率的波进行的一系列相位测量从电磁波的渡越时间的知识推断出两点之间的距离的电磁测距仪中，装置 用于从这样的一系列测量中自动得出最终距离。 这些相位测量具有两位数字，受到错误的影响，并且具有与10的幂相关的有效频率的波。 本发明的装置由于有效频率降低的波形而依次测量，通过将一个可能是四个或五个的数字相加，并从新的测量中减去前一个测量的十位数字的大小，从而依次进行操作。 此操作可以对测量过程中可能发生的任何错误校正新测量的十位数，从而可将其用作最终结果中的数字之一。

    Device for aerating liquids
    2.
    发明授权
    Device for aerating liquids 失效
    用于提升液体的装置

    公开(公告)号：US3744774A

    公开(公告)日：1973-07-10

    申请号：US3744774D

    申请日：1971-03-02

    Applicant: SOUTH AFRICAN INVENTIONS

    Inventor： HUISMAN P ,  JELIER C

    IPC: B01F3/04 ,  B01F7/00 ,  B01F7/02 ,  C02F3/18

    CPC classification number: C02F3/18 ,  B01F3/04765 ,  B01F7/02 ,  Y02W10/15

    Abstract: The present invention provides for a device for aerating liquids such as sewage. The device includes a rotatable disc-like member having protruding formations adapted to draw air into the liquid to be aerated during rotation of the member when partly immersed in the liquid.

    Abstract translation: 本发明提供一种用于对液体如污水进行充气的装置。 该装置包括可旋转的盘状构件，其具有突出的结构，其适于在局部浸没在液体中时在构件旋转期间将空气吸入待充气的液体中。

    Impact roller apparatus
    5.
    发明授权
    Impact roller apparatus 失效
    冲击辊装置

    公开(公告)号：US3788757A

    公开(公告)日：1974-01-29

    申请号：US3788757D

    申请日：1971-01-27

    Applicant: SOUTH AFRICAN INVENTIONS

    Inventor： BERRANGE A

    IPC: E02D3/02 ,  E02D3/026 ,  E01C19/26

    CPC classification number: E02D3/026 ,  E02D3/02

    Abstract: The invention provides an impact roller in which its crosssectional profile is deformable to permit variation of the lift of the centre of gravity of the roller. Thereby the impact delivered by the roller to underlying soils and gravels may be varied.

    Abstract translation: 本发明提供了一种冲击辊，其中其横截面轮廓可变形，以允许辊的重心的升程变化。 因此，辊子对下层土壤和砾石的影响可能会有所不同。

    Measuring transient loads
    6.
    发明授权
    Measuring transient loads 失效
    测量瞬态负载

    公开(公告)号：US3782486A

    公开(公告)日：1974-01-01

    申请号：US3782486D

    申请日：1971-05-12

    Applicant: SOUTH AFRICAN INVENTIONS

    Inventor： KUHN S ,  BASSON J ,  FREEME C ,  BEULINK R

    IPC: G01G7/06 ,  G08B13/26 ,  G01G3/14

    CPC classification number: G08B13/26 ,  G01G7/06

    Abstract: A device for sensing and measuring a transient load, such as a load imposed by at least one wheel on an axle of a passing vehicle, comprising a flexible and resilient mat formed of a dielectric and elastomeric material and adapted to be engaged by the load, and at least two vertically spaced capacitor electrodes embedded in and extending over substantially the entire operative area of the mat. The electrodes are connected to a device for detecting variations in the electrode spacing owing to transient loads. Void areas are located in the body of the mat to provide for mat deformation that is linearly proportional to the magnitude of the applied load. Preferably, the void areas are uniformly distributed in the mat and extend substantially from one of the electrodes to the other electrode.

    Abstract translation: 用于感测和测量瞬时负载的装置，例如由通过车辆的轴上的至少一个轮施加的负载，包括由电介质和弹性体材料形成并适于被负载接合的柔性和弹性垫， 以及至少两个垂直间隔开的电容器电极，其嵌入并在基本上整个垫的整个操作区域上延伸。 电极连接到用于检测由于瞬态负载引起的电极间距变化的装置。 空隙区域位于垫的主体中，以提供与所施加的负载的大小线性成比例的垫变形。 优选地，空隙区域均匀分布在垫中并基本上从一个电极延伸到另一个电极。

    Impact compaction of loose materials
    7.
    发明授权
    Impact compaction of loose materials 失效
    松散材料的冲击压实

    公开(公告)号：US3662658A

    公开(公告)日：1972-05-16

    申请号：US3662658D

    申请日：1970-03-19

    Applicant: SOUTH AFRICAN INVENTIONS

    Inventor： BERRANGE AUBREY RALPH

    IPC: E02D3/026 ,  E01C19/30

    CPC classification number: E02D3/026

    Abstract: The specification discloses an impact roller which is attachable to a hauling vehicle via a drawbar and a resilient coupling and which includes restraining means, for example in the form of damping means or braking means, to restrain excessive relative horizontal movement between the roller and the drawbar during hauling of the roller.

    Abstract translation: 本说明书公开了一种冲击辊，该冲击辊可通过牵引杆和弹性联轴器附接到牵引车辆，并且包括限制装置，例如阻尼装置或制动装置的形式，以限制滚子与牵引杆之间过度的相对水平运动 在牵引滚筒时。

    Chemically hardened gelatin-separating medium for chromatography and ion exchange and method of making the same
    8.
    发明授权
    Chemically hardened gelatin-separating medium for chromatography and ion exchange and method of making the same 失效
    用于色谱和离子交换的化学硬化凝胶分离介质及其制备方法

    公开(公告)号：US3640809A

    公开(公告)日：1972-02-08

    申请号：US3640809D

    申请日：1968-12-10

    Applicant: SOUTH AFRICAN INVENTIONS

    Inventor： POLSON ALFRED ,  KATZ WOOLF

    IPC: B01D15/04 ,  B01J20/22 ,  B01J20/291 ,  G01N30/50 ,  B01K5/00 ,  B01D13/02

    CPC classification number: B01J20/291 ,  B01J20/22 ,  B01J2220/54 ,  G01N30/50

    Abstract: Selected gelatin, in particular the high molecular weight fraction obtained by fractionation with PEG is chemically hardened e.g. with tanning agents and used in a form of beads for exclusion chromatography and/or ion exchange or as a continuous body for electrophoresis. Ion exchange properties may be suppressed or enhanced as required by chemical treatment of the gelatin or by the choice of conditions during separation (pH, salt content). Ion-exchange properties are calibrated by electroosmosis.

    Abstract translation: 选择的明胶，特别是通过用PEG分级获得的高分子量级分被化学硬化，例如 使用鞣剂并以珠粒的形式用于排除色谱法和/或离子交换或用作电泳的连续体。 离子交换性能可通过明胶的化学处理或分离条件的选择（pH，盐含量）而被抑制或增强。 离子交换性质通过电渗校准。

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