Magnetic structures and methods for defining magnetic structures using one-dimensional codes

• US 8,872,608 B2
• Filed: 09/24/2013
• Issued: 10/28/2014
• Est. Priority Date: 04/04/2008
• Status: Expired due to Fees

• Current Assignee: Correlated Magnetics Research, LLC
• Original Assignee: Correlated Magnetics Research, LLC
• Inventors: Richards, James L., Fullerton, Larry W., Roberts, Mark D.
• Primary Examiner(s): BARRERA, RAMON M
• Application Number:
  US14/035,818
• Publication Number:
  US 20140022730A1
• Time in Patent Office: 399 Days
• Field of Search: 335/285, 335/306
• US Class Current: 335/285
• CPC Class Codes: B42F 1/00 Sheets temporarily attached together without perforating; Means therefor
• CPC Class Codes: B42F 1/06 of flat cross-section , e.g. made of a piece of metal sheet
• CPC Class Codes: G09F 7/04 the elements being secured or adapted to be secured by magnetic means
• CPC Class Codes: H01F 7/00 Magnets superconducting magnets H01F6/00; for separation of solid materials or fluids B03C1/00; for bench or like work-holders B23B31/28, B23Q3/00; work-holding devices B25B11/00; lifting magnets B66C1/00; operating or controlling locks using permanent magnets E05B47/0038; devices for holding a wing, e.g. door or window, by magnetic or electromagnetic attraction E05C19/16; relieving load or bearings using magnetic means F16C39/06 ; for electric meters G01R; for relays H01H; for electric discharge tubes H01J, e.g. H01J3/24, H01J23/10, H01J29/68 ; for dynamo-electric machines H02K
• CPC Class Codes: H01F 7/02 Permanent magnets [PM]
• CPC Class Codes: H01F 7/0242 Magnetic drives, magnetic coupling devices
• CPC Class Codes: H01F 7/0252 PM holding devices H01F7/021, H01F7/0215, H01F7/0226 take precedence
• CPC Class Codes: H01F 7/0263 Closures, bags, bands, engagement devices with male and female parts

Abstract

An improved field emission system and method is provided that involves field emission structures having irregular polarity patterns defined in accordance with one-dimensional codes, where an irregular polarity pattern is at least one of an asymmetrical polarity pattern or an uneven polarity pattern. Such one-dimensional codes define at least one peak force and a plurality of off peak spatial forces corresponding to a plurality of alignments of said first and second field emission structures per code modulo, where a peak force is a spatial force produced when all aligned field emission sources produce an attractive force or all aligned field emission sources produce a repellant force and an off peak spatial force is a spatial force resulting from cancellation of at least one attractive force by at least one repellant force.

Claims

1. A field emission system, comprising:

a first field emission structure; and

a second field emission structure, said first and second field emission structures each comprising an array of field emission sources each having positions and polarities relating to a spatial force function that corresponds to forces produced by aligned field emission sources of the first and second field emission structures at different spatial alignments within a field domain, said spatial force function being in accordance with a code modulo of a code that defines an irregular polarity pattern, said irregular polarity pattern being at least one of an asymmetric polarity pattern or an uneven polarity pattern, said code modulo having a length equal to the length of said code, said code defining at least one peak force per code modulo corresponding to one or more spatial alignments of a plurality of the field emission sources of said first field emission structure and a plurality of the field emission sources of said second field emission structure, a peak force being a spatial force produced when all aligned field emission sources produce an attractive force or all aligned field emission sources produce a repellant force, said code also defining a plurality of off peak forces per code modulo corresponding to a plurality of spatial missalignments of said first and second field emission structures, an off peak force being a spatial force resulting from cancellation of at least one attractive force produced by aligned field emission sources of said first and second field emission structures by at least one repellant force produced by aligned field emission sources of said first and second field emission structures.

2. The field emission system of claim 1, wherein said code is one of a pseudorandom code, a deterministic code, or a designed code.

3. The field emission system of claim 1, wherein said code is one of a one dimensional code, a two dimensional code, a three dimensional code, or a four dimensional code.

4. The field emission system of claim 1, wherein each field emission source of each said array of field emission sources has a first vector direction or a second vector direction, said second vector direction being opposite said first vector direction.

5. The field emission system of claim 1, wherein at least one off peak force of said plurality of off peak forces is a zero side lobe.

6. The field emission system of claim 1, wherein each said array of field emission sources comprises one of a one-dimensional array, a two-dimensional array, or a three-dimensional array.

7. The field emission system of claim 1, wherein said polarities of the field emission sources comprise at least one of North-South polarities or positive-negative polarities.

8. The field emission system of claim 1, wherein at least one of said field emission sources comprises a magnetic field emission source or an electric field emission source.

9. The field emission system of claim 1, wherein at least one of said field emission sources comprises a permanent magnet, an electromagnet, an electret, a magnetized ferromagnetic material, a portion of a magnetized ferromagnetic material, a soft magnetic material, or a superconductive magnetic material.

10. The field emission system of claim 1, wherein at least one said first and second field emission structures comprises at least one of a back keeper layer, a front saturable layer, an active intermediate element, a passive intermediate element, a lever, a latch, a swivel, a heat source, a heat sink, an inductive loop, a plating nichrome wire, an embedded wire, or a kill mechanism.

11. The field emission system of claim 1, wherein at least one of said first and second field emission structures comprises a planer structure, a conical structure, a cylindrical structure, a curve surface, a stepped surface.

12. A field emissions method, comprising:

defining a spatial force function corresponding to the relative alignment of a first array of field emission sources of a first field emission structure and a second array of field emission sources of a second field emission structure within a field domain, said spatial force function being in accordance with a code modulo of a code that defines an irregular polarity pattern, said irregular polarity pattern being at least one of an asymmetric polarity pattern or an uneven polarity pattern, said code modulo having a length equal to the length of said code, said code defining at least one peak force per code modulo corresponding to one or more spatial alignments of a plurality of the field emission sources of said first field emission structure and a plurality of the field emission sources of said second field emission structure, said peak force being a spatial force produced when all aligned field emission sources produce an attractive force or all aligned field emission sources produce a repellant force, said code also defining a plurality of off peak forces per code modulo corresponding to a plurality of spatial missalignments of said first and second field emission structures, said off peak force being a spatial force resulting from cancellation of at least one attractive force produced by aligned field emission sources of said first and second field emission structures by at least one repellant force produced by aligned field emission sources of said first and second field emission structures; and

establishing, in accordance with said spatial force function, a position and polarity of each field emission source of said first array of field emission sources and said second array of field emission sources.

13. The method of claim 12, wherein said code is one of a pseudorandom code, a deterministic code, or a designed code.

14. The method of claim 12, wherein said code is one of a one dimensional code, a two dimensional code, a three dimensional code, or a four dimensional code.

15. The method of claim 12, wherein each field emission source of each said array of field emission sources has a first vector direction or a second vector direction, said second vector direction being opposite said first vector direction.

16. The method of claim 12, wherein at least one off peak force of said plurality of off peak forces is a zero side lobe.

17. The method of claim 12, wherein each said array of field emission sources comprises one of a one-dimensional array, a two-dimensional array, or a three-dimensional array.

18. The method of claim 12, wherein at least one of said field emission sources comprises a magnetic field emission source or an electric field emission source.

19. The method of claim 12, wherein at least one of said field emission sources comprises a permanent magnet, an electromagnet, an electret, a magnetized ferromagnetic material, a portion of a magnetized ferromagnetic material, a soft magnetic material, or a superconductive magnetic material.

20. A field emission system, comprising:

a first field emission structure; and

a second field emission structure, said first and second field emission structures each having arrays of field emission sources having an irregular polarity pattern defined in accordance with a code modulo of a code, said irregular polarity pattern being at least one of an asymmetrical polarity pattern or an uneven polarity pattern, said code modulo having a length equal to the length of said code, said code defining at least one peak force and a plurality of off peak forces corresponding to a plurality of alignments of said first and second field emission structures per code modulo, said peak force being a spatial force produced when all aligned field emission sources produce an attractive force or all aligned field emission sources produce a repellant force, said off peak force being a spatial force that results from cancellation of at least one attractive force by at least one repellant force.