Magnetic device using non polarized magnetic attraction elements

• US 8,692,637 B2
• Filed: 08/05/2013
• Issued: 04/08/2014
• Est. Priority Date: 04/04/2008
• Status: Active Grant

• Current Assignee: Correlated Magnetics Research, LLC
• Original Assignee: Correlated Magnetics Research, LLC
• Inventors: Richards, James L., Fullerton, Larry W., Roberts, Mark
• Primary Examiner(s): BARRERA, RAMON M
• Application Number:
  US13/959,649
• Publication Number:
  US 20130314184A1
• Time in Patent Office: 246 Days
• Field of Search: 335302-306, 243/03
• US Class Current: 335/306
• 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

A magnetic force profile system and related methods and devices based on a sequence of magnets arranged according to a code and acting on a complementary sequence of non-polarized magnetic attraction elements, for example, iron, soft iron, steel, and others. Variations include the addition of polarity codes to the first sequence of magnets, and operation with electromagnets. Exemplary attachment devices and lock and key devices are disclosed.

Claims

1. A magnetic field force generator having a predefined force profile comprising:

a first magnetic structure comprising a first plurality of magnets arranged according to a first pattern; and

a complementary magnetic structure comprising a complementary plurality of non-polarized magnetic attractive elements complementary to said first magnetic structure;

said first pattern based on a variable code having an autocorrelation function with a single maximum peak per code modulo;

said first magnetic structure and said complementary magnetic structure having an operational range of relative position;

wherein magnetic force between said first magnet structure and said complementary magnet structure as a function of position within said operational range corresponds to said autocorrelation function, wherein the first pattern defines a spacing between said magnets of said first magnetic structure based on a random or pseudorandom code.

2. The magnetic field force generator as recited in claim 1, wherein the code is a Golomb ruler code.

3. The magnetic field force generator as recited in claim 1, wherein the code is a Costas array.

4. The magnetic field force generator as recited in claim 1, further including a first part associated with said first magnetic structure and further including a second part associated with said second magnetic structure.

5. The magnetic field force generator as recited in claim 4, wherein said first part and said second part are magnetically attached when said first magnetic structure and said second magnetic structure are arranged in accordance with said single maximum correlation position.

6. The magnetic field force generator as recited in claim 4, wherein said first part is a lock for enabling operation of a device, and said second part is a key;

said first part enabling operation of said device when said second part is aligned in accordance with said single maximum peak autocorrelation position with said first part.

7. The magnetic field force generator as recited in claim 1, wherein said first plurality of magnets of said first magnetic structure are further arranged in accordance with a second code, said second code defining polarities of said first magnetic structure.

8. The magnetic field force generator as recited in claim 7, wherein said second magnetic structure further comprises one or more coils coupled to respective non polarized magnetic elements of second magnetic structure to form electromagnetic elements.

9. The magnetic field force generator as recited in claim 8, wherein said electromagnetic elements are configured to be driven in accordance with a complementary pattern to said second code.

10. The magnetic field force generator as recited in claim 9, wherein said electromagnetic elements are configured to be driven to produce a net repelling force between said first magnetic structure and said second magnetic structure.

11. A magnetic field force generator having a predefined force profile comprising:

a first magnetic structure comprising a first plurality of magnets arranged according to a first pattern; and

a complementary magnetic structure comprising a complementary plurality of non-polarized magnetic attractive elements complementary to said first magnetic structure;

said first pattern based on a variable code having an autocorrelation function with a single maximum peak per code modulo;

The magnetic field force generator as recited in claim 1, wherein said first pattern is a discrete pattern with a minimum element width and said magnetic force profile has a single maximum peak magnitude;

wherein said magnetic force profile has a maximum magnitude, spaced from said maximum peak magnitude by at least said minimum element width, of less than half of said maximum peak magnitude.

12. The magnetic field force generator as recited in claim 11, wherein the code is a Golomb ruler code.

13. The magnetic field force generator as recited in claim 11, wherein the code is a Costas array.

14. The magnetic field force generator as recited in claim 11, wherein said first plurality of magnets of said first magnetic structure are further arranged in accordance with a second code, said second code defining polarities of said first magnetic structure.

15. A magnetic field force generator having a predefined force profile comprising:

a first magnetic structure comprising a first plurality of magnets arranged according to a first pattern; and

a complementary magnetic structure comprising a complementary plurality of non-polarized magnetic attractive elements complementary to said first magnetic structure;

said first pattern based on a variable code having an autocorrelation function with a single maximum peak per code modulo;

said first magnetic structure and said complementary magnetic structure having an operational range of relative position;

wherein magnetic force between said first magnetic structure and said complementary magnetic structure as a function of position within said operational range corresponds to said autocorrelation function;

said autocorrelation function having a plurality of positions corresponding to said operational range wherein the greatest off maximum peak autocorrelation magnitude is less than half of the single maximum peak.

16. The magnetic field force generator as recited in claim 15, wherein the code is a Golomb ruler code.

17. The magnetic field force generator as recited in claim 15, wherein the code is a Costas array.

18. The magnetic field force generator as recited in claim 15, wherein said magnets of said first magnetic structure are further arranged in accordance with a second code, said second code defining polarities of said first magnetic structure.

19. The magnetic field force generator as recited in claim 15, further including a first part associated with said first magnetic structure and further including a second part associated with said second magnetic structure;

wherein said first part and said second part are magnetically attached when said first magnetic structure and said second magnetic structure are arranged in accordance with said single maximum correlation position.

20. The magnetic field force generator as recited in claim 15, further including a first part associated with said first magnetic structure and further including a second part associated with said second magnetic structure;

wherein said first part is a lock for enabling operation of a device, and said second part is a key;

said first part enabling operation of said device when said second part is aligned in accordance with said single maximum peak autocorrelation position with said first part.