公开(公告)号：US09934639B2

公开(公告)日：2018-04-03

申请号：US15000377

申请日：2016-01-19

申请人： Esker Coffey

发明人： Esker Coffey

IPC分类号： G01N27/72 ,  G07D5/08 ,  H01L21/00 ,  H01F1/00

CPC分类号： G07D5/08 ,  H01F1/00 ,  H01L21/00 ,  H01L2221/00

摘要： A method and apparatus for using a magnetic element to detect the presence of foreign materials, or anomalies, embedded in an object including placing magnetic field viewing film over an object such as a coin and passing the magnetic element over the object in prescribed patterns. The object to be tested for an anomaly may be covered or encased in magnetic paper. The presence of a foreign material in the object will be detected by the film when a magnetic element passes by the anomaly. An anomaly, such as of tungsten hidden in a gold coin or nugget, is detected by the film due to the disruption of the magnetic field of the anomaly. The film will present a dark spot adjacent to the location of the hidden anomaly.

公开(公告)号：US20160209364A1

公开(公告)日：2016-07-21

申请号：US15000377

申请日：2016-01-19

申请人： Esker Coffey

发明人： Esker Coffey

IPC分类号： G01N27/72

CPC分类号： G07D5/08 ,  H01F1/00 ,  H01L21/00 ,  H01L2221/00

摘要： A method and apparatus for using a magnetic element to detect the presence of foreign materials, or anomalies, embedded in an object including placing magnetic field viewing film over an object such as a coin and passing the magnetic element over the object in prescribed patterns. The object to be tested for an anomaly may be covered or encased in magnetic paper. The presence of a foreign material in the object will be detected by the film when a magnetic element passes by the anomaly. An anomaly, such as of tungsten hidden in a gold coin or nugget, is detected by the film due to the disruption of the magnetic field of the anomaly. The film will present a dark spot adjacent to the location of the hidden anomaly.

摘要翻译： 一种使用磁性元件来检测嵌入在物体中的异物的存在的方法和装置，包括将磁场观察膜放置在诸如硬币的物体上，并以规定的图案将磁性元件穿过物体。 待测试异常的物体可能被覆盖或包裹在磁性纸中。 当磁性元件通过异常时，胶片中会检测到物体中异物的存在。 由于异常磁场的破坏，电影中会检测出隐藏在金币或熔核中的钨等异常现象。 电影将在隐藏的异常位置附近呈现一个暗点。