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Title: Method for making an improved magnetic encoding device

Abstract

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.

Inventors:
 [1]
  1. (Oak Ridge, TN)
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
OSTI Identifier:
863759
Patent Number(s):
4242789
Assignee:
United States of America as represented by United States (Washington, DC) ORNL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; improved; magnetic; encoding; device; provided; storage; mediums; identification; control; applications; output; signals; reader; shorter; duration; substantially; magnitude; prior; elements; produced; uniformly; bending; wire; strip; stock; material; longitudinally; common; radius; exceed; elastic; limit; subsequently; mounting; restrained; unbent; position; substrate; nonmagnetic; spot; weld; attached; form; binary; coded; array; according; desired; code; enclosed; plastic; laminate; structure; devices; security; badges; key; cards; output signals; output signal; magnetic material; storage medium; binary coded; shorter duration; magnetic encoding; storage mediums; improved magnetic; encoding device; /29/235/360/365/

Citation Formats

Fox, Richard J. Method for making an improved magnetic encoding device. United States: N. p., 1981. Web.
Fox, Richard J. Method for making an improved magnetic encoding device. United States.
Fox, Richard J. Thu . "Method for making an improved magnetic encoding device". United States. https://www.osti.gov/servlets/purl/863759.
@article{osti_863759,
title = {Method for making an improved magnetic encoding device},
author = {Fox, Richard J.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}

Patent:

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