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    • 7. 发明授权
    • Method for making an improved magnetic encoding device
    • 制造改进磁编码装置的方法
    • US4242789A
    • 1981-01-06
    • US21291
    • 1979-03-16
    • Richard J. Fox
    • Richard J. Fox
    • G06K19/02G06K19/12
    • G06K19/02G06K19/12Y10T29/49863Y10T29/49906
    • A magnetic encoding device and method for making the same are provided for use as magnetic storage mediums in identification control applications which give output signals from a reader that are of shorter duration and substantially greater magnitude than those of the prior art. Magnetic encoding elements are produced by uniformly bending wire or strip stock of a magnetic material longitudinally about a common radius to exceed the elastic limit of the material and subsequently mounting the material so that it is restrained in an unbent position on a substrate of nonmagnetic material. The elements are spot weld attached to a substrate to form a binary coded array of elements according to a desired binary code. The coded substrate may be enclosed in a plastic laminate structure. Such devices may be used for security badges, key cards, and the like and may have many other applications.
    • 提供了用于制造该磁性编码装置的磁性编码装置及其制造方法,用作识别控制应用中的磁性存储介质,其给出了读取器的输出信号,该信号的持续时间较短并且比现有技术大得多。 磁性编码元件是通过将磁性材料的线材或条状原料纵向围绕公共半径均匀地弯曲而超过材料的弹性极限并随后安装材料以使其被限制在非磁性材料的基底上的无位置上而制成的。 这些元件是附着到基底上的点焊,以根据期望的二进制代码形成元件的二进制编码阵列。 编码的基底可以封装在塑料层压结构中。 这样的设备可以用于安全徽章,钥匙卡等,并且可以具有许多其他应用。