The present invention relates generally to a system and method for magnetization. More particularly, the present invention relates to a system and method for magnetizing magnetic sources into a magnetizable material.
A wide metal inductor coil for magnetizing magnetic sources known as maxels into a magnetizable material is described in U.S. Pat. No. 8,179,219, issued May 15, 2012, the contents of which are incorporated by reference herein. This known wide metal inductive coil 114 is shown in
A first wire conductor 126 is soldered to the top of the first circular conductor 116a at a location next to the slotted opening 120a but opposite the solder joint 122. The second circular conductor 116b has a grove (or notch) 127 in the bottom of it which can receive a second wire conductor 128 that is then soldered to the second circular conductor 116b such that the bottom of the second circular conductor 116b remains substantially flat. Other methods can also be employed to connect the second wire conductor 128 to the second circular conductor 116b including placing the second wire conductor 128 into a hole drilled through a side of the second circular conductor 116b and then soldering the second wire conductor 116 to the second circular conductor 116b. As depicted in
Referring to
For example implementations, a diameter of one or more of the layers 132 and 136 of the magnetic print head 141, which can also have a shape other than round (e.g., oval, rectangular, elliptical, triangular, hexagonal, etc.), may be selected to be large enough to handle a load of a current passing through the print head layers 132 and 136 and also large enough to substantially ensure no appreciable reverse magnetic field is produced near the hole 121 where the magnetic print head 141 produces a maxel (magnetic source) in the magnetizing material 130. Although the hole 121 is also shown to comprise a substantially circular or round shape, this is by way of example only, and it should be appreciated that the hole 121 may alternatively comprise other shapes including but not limited to, oval, rectangular, elliptical, triangular, hexagonal, and so forth. Moreover, a size of the hole 121 may correspond to a desired maxel resolution in the magnetizing material 130, whereby a given print head 141 may have a different sized hole 121 so as to print different sized maxels in the magnetizing material 130. Example diameter sizes of holes 121 in print heads 141 may include, but are not limited to, 0.7 mm to 4 mm. In addition, the diameter sizes of holes 121 may alternatively be smaller or larger, depending on design and/or particular application.
For an example assembly procedure, prior to attaching the two layers 132 and 136 that are electrically conductive, an insulating material (e.g., Kapton) may be placed on top of the outer layer 132 (and/or beneath the inner layer 136) so as to insulate one layer from the other. After welding, the insulating material may be cut away or otherwise removed from the weld joint 140, which enables the two conductor portions to be electrically attached thereby producing one and one-half turns of an inductor coil. Alternatively, an insulating material may be placed against a given layer 132 or 136 such that it insulates the given layer 132 or 136 from an adjoining layer except for a portion corresponding to the weld joint 140 between the two adjoining layers 132 and 136. During an example operation, an insulating material may prevent current from passing between the layers 132 and 136 except at the weld joint 140 thereby resulting in each adjoining layer acting as three-quarters of a turn of an inductor coil (e.g., of the print head 141) if using example layer designs as illustrated in
Although the aforementioned wide metal inductive coil 114 and the magnetic print head 141 work well it is still desirable to improve upon these components or at least how these components can be used in a different manner to form magnetizing magnetic sources (maxels) into a magnetizable material. Such improvements are the subject of the present invention.
A system and method for magnetizing magnetic sources into a magnetizable material are described in the independent claims of the present application. Advantageous embodiments of the system and method have been described in the dependent claims of the present application.
In one aspect, the present invention provides a system for magnetizing magnetic sources into a magnetizable material. In one embodiment, the system comprises: (a) an inductor coil which has multiple layers forming a coil and a hole extending through the multiple layers; (b) a positioning device configured to position the inductor coil next to the magnetizable material; and (c) an electrical power source configured to provide electricity to the inductor coil such that the inductor coil emits a magnetic field that magnetizes an area on a surface of the magnetizable material, wherein the area on the surface of the magnetizable material is magnetized in a direction other than perpendicular to the magnetizable material such that there is a magnetic dipole with both a north polarity and a south polarity formed on the surface of the magnetizable material. In addition, the system may comprise multiple inductor coils which can magnetize multiple magnetic dipoles each with a north polarity and a south polarity on the surface of the magnetizable material.
In another aspect, the present invention provides a method for magnetizing magnetic sources into a magnetizable material. The method comprises steps of: (a) providing an inductor coil having multiple layers forming a coil and a hole extending through the multiple layers; (b) positioning the inductor coil next to the magnetizable material; and (c) emitting from the inductor coil a magnetic field that magnetizes an area on a surface of the magnetizable material, wherein the area on the surface of the magnetizable material is magnetized in a direction other than perpendicular to the magnetizable material such that there is a magnetic dipole with both a north polarity and a south polarity formed on the surface of the magnetizable material. In addition, the method may utilize multiple inductor coils to magnetize multiple magnetic dipoles each with a north polarity and a south polarity on the surface of the magnetizable material.
Additional aspects of the invention will be set forth, in part, in the detailed description, figures and any claims which follow, and in part will be derived from the detailed description, or can be learned by practice of the invention. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as disclosed.
A more complete understanding of the present invention may be obtained by reference to the following detailed description when taken in conjunction with the accompanying drawings wherein:
Referring to
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In view of the foregoing, one skilled in the art will readily appreciate that the present invention includes a system and a method for magnetizing magnetic sources into a magnetizable material. For instance, the system could include an inductor coil 300 (for example)(actually multiple inductor coils could be used), a positioning device 350, and an electrical power source 352 (see
Although multiple embodiments of the present invention have been illustrated in the accompanying Drawings and described in the foregoing Detailed Description, it should be understood that the present invention is not limited to the disclosed embodiments, but is capable of numerous rearrangements, modifications and substitutions without departing from the invention as set forth and defined by the following claims. It should also be noted that the reference to the “present invention” or “invention” used herein relates to exemplary embodiments and not necessarily to every embodiment that is encompassed by the appended claims.
This application claims the benefit U.S. Provisional Application Ser. No. 61/742,260 filed on Aug. 6, 2012. The contents of this document are incorporated by reference herein.
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