System and method for magnetization

• US 9,257,219 B2
• Filed: 08/05/2013
• Issued: 02/09/2016
• Est. Priority Date: 08/06/2012
• Status: Expired due to Fees

• Current Assignee: Correlated Magnetics Research, LLC
• Original Assignee: Correlated Magnetics Research, LLC
• Inventors: Fullerton, Larry W., Roberts, Mark D., Evans, Robert Scott
• Primary Examiner(s): MUSLEH, MOHAMAD A
• Application Number:
  US13/959,201
• Publication Number:
  US 20140035707A1
• Time in Patent Office: 918 Days
• Field of Search: 336/223, 336/232, 335284-295, 335/299
• US Class Current: 1/1
• CPC Class Codes: B41J 2/43 for magnetic printing
• CPC Class Codes: H01F 13/00 Apparatus or processes for magnetising or demagnetising devices for holding workpieces using magnetic or electric force acting directly on the workpieces B23Q3/15 ; for degaussing ships B63G9/06; for clocks or watches G04D9/00; recording or erasing of information on magnetic record carriers G11B5/00 ; demagnetising arrangements for colour television H04N9/29
• CPC Class Codes: H01F 27/2847 Sheets; Strips H01F27/2866 takes precedence
• CPC Class Codes: H01F 7/20 without armatures cores H01F3/00; coils H01F5/00 ; shaping metal by applying magnetic forces B21D26/14; electromagnets specially adapted for NMR applications G01R33/381

Abstract

A system and a method are described herein for magnetizing magnetic sources into a magnetizable material. In one embodiment, the method comprises: (a) providing an inductor coil having multiple layers 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 that is magnetized is 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.

Claims

1. A system for magnetizing magnetic sources into a magnetizable material, the system comprising:

an inductor coil having multiple layers forming a coil and a hole extending through the multiple layers;

a positioning device configured to position an outer perimeter of the inductor coil next to a surface of the magnetizable material; and

an electrical power source configured to provide electricity to the inductor coil such that the inductor coil produces a magnetic field at the outer perimeter of the inductor coil that magnetizes an area on the 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 surface of 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.

2. The system of claim 1, wherein the positioning device is further configured to tilt the inductor coil with respect to the magnetizable material such that the inductor coil emits the magnetic field to magnetize the area of the surface of the magnetizable material in a direction other than perpendicular to the magnetizable material and other than parallel to the magnetizable material.

3. The system of claim 1, further comprising a protective layer which is placed between the inductor coil and the magnetizable material.

4. The system of claim 1, wherein the multiple layers are welded to one another to form the coil with a number of turns.

5. The system of claim 4, wherein the weld is an overlap weld or a butt weld.

6. The system of claim 1, wherein a height of the coil which is a function of a thickness of each layer and the number of turns along with a width of the hole determines the area on the surface of the magnetizable material that is magnetized by the inductor coil.

7. The system of claim 1, wherein the inductor coil is placed in a casting compound.

8. The system of claim 1, wherein the hole formed in the inductor coil is a slanted hole.

9. The system of claim 1, wherein the hole formed in the inductor coil is either a rectangular-shaped hole, a circular-shaped hole, a triangular-shaped hole, or an oval-shaped hole.

10. The system of claim 1, further comprising:

another inductor coil having multiple layers forming a coil and a hole extending through the multiple layers;

the positioning device is configured to also position the another inductor coil next to the surface of the magnetizable material; and

the electrical power source is also configured to provide electricity to the another inductor coil such that the another inductor coil produces a magnetic field at the outer perimeter of the coil that magnetizes another area on the surface of the magnetizable material, wherein the another area on the surface of the magnetizable material is magnetized in a perpendicular direction such that there is a magnetic dipole with either a north polarity or a south polarity formed on the surface of the magnetizable material.

11. A method for magnetizing magnetic sources into a magnetizable material, the method comprising:

providing an inductor coil having multiple layers forming a coil and a hole extending through the multiple layers;

positioning an outer perimeter of the inductor coil next to a surface of the magnetizable material; and

producing a magnetic field at the outer perimeter of the inductor coil that magnetizes an area on the 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 surface of 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.

12. The method of claim 11, wherein the positioning step further includes a step of tilting the inductor coil with respect to the magnetizable material such that the inductor coil emits the magnetic field to magnetize the area of the surface of the magnetizable material in a direction other than perpendicular to the magnetizable material and other than parallel to the magnetizable material.

13. The method of claim 11, further comprising a step of placing a protective layer between the inductor coil and the magnetizable material.

14. The method of claim 11, wherein the multiple layers are welded to one another to form the coil with a number of turns.

15. The method of claim 14, wherein the weld is an overlap weld or a butt weld.

16. The method of claim 11, wherein a height of the coil which is a function of a thickness of each layer and the number of turns along with a width of the hole determines the area on the surface of the magnetizable material that is magnetized by the inductor coil.

17. The method of claim 11, wherein the inductor coil is placed in a casting compound.

18. The method of claim 11, wherein the hole formed in the inductor coil is a slanted hole.

19. The method of claim 11, wherein the hole formed in the inductor coil is either a rectangular-shaped hole, a circular-shaped hole, a triangular-shaped hole, or an oval-shaped hole.

20. The method of claim 11, further comprising steps of:

providing another inductor coil having multiple layers forming a coil and a hole extending through the multiple layers;

positioning the another inductor coil next to the magnetizable material; and

producing a magnetic field at the outer perimeter of the another inductor coil that magnetizes another area on the surface of the magnetizable material, wherein the another area on the surface of the magnetizable material is magnetized in a perpendicular direction such that there is a magnetic dipole with either a north polarity or a south polarity formed on the surface of the magnetizable material.