Field emission system and method

• US 8,373,526 B2
• Filed: 05/15/2012
• Issued: 02/12/2013
• Est. Priority Date: 04/04/2008
• Status: Expired due to Fees

• Current Assignee: Correlated Magnetics Research, LLC
• Original Assignee: Correlated Magnetics Research, LLC
• Inventors: Fullerton, Larry W., Roberts, Mark D., Richards, James L.
• Primary Examiner(s): BARRERA, RAMON M
• Application Number:
  US13/471,691
• Publication Number:
  US 20120286913A1
• Time in Patent Office: 273 Days
• Field of Search: 335/285, 335302-306, 243/03
• US Class Current: 335/285
• CPC Class Codes: G01D 18/00 Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
• CPC Class Codes: H01F 1/01 of inorganic materials H01F1/44 takes precedence
• CPC Class Codes: H01F 13/003 Methods and devices for magnetising permanent magnets permanent magnets H01F7/02
• CPC Class Codes: H01F 7/02 Permanent magnets [PM]
• CPC Class Codes: H01F 7/021 Construction of PM H01F7/0278 takes precedence; PM compositions H01F1/032
• CPC Class Codes: H01F 7/0242 Magnetic drives, magnetic coupling devices
• CPC Class Codes: H01F 7/0247 Orientating, locating, transporting arrangements
• CPC Class Codes: H01F 7/0252 PM holding devices H01F7/021, H01F7/0215, H01F7/0226 take precedence
• CPC Class Codes: H01F 7/0284 using a trimmable or adjustable magnetic circuit, e.g. for a symmetric dipole or quadrupole magnetic field
• CPC Class Codes: H02K 15/03 having permanent magnets
• CPC Class Codes: H02K 49/10 of the permanent-magnet type
• CPC Class Codes: Y10T 24/32 having magnetic fastener

Abstract

An improved field emission system and method is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlation properties, which may be in accordance with a code. The correlation properties correspond to a desired spatial force function where spatial forces between field emission structures correspond to relative alignment, separation distance, and the spatial force function.

Claims

1. A magnetic attachment system, comprising:

a first array of magnetic field sources having positions, polarities, and field strengths that produce a first magnetic field in accordance with a Barker sequence having a length greater than three; and

a second array of magnetic field sources having positions, polarities, and field strengths that produce a second magnetic field in accordance with a complementary Barker sequence, said first magnetic field and said second magnetic field being reversed in polarity and direction, said magnetic attachment system producing a peak attachment force when aligned with a complementary magnetic attachment system across an interface boundary.

2. The magnetic attachment system of claim 1, wherein said Barker sequence is a Barker 4 sequence.

3. The magnetic attachment system of claim 1, wherein said Barker sequence is a Barker 5 sequence.

4. The magnetic attachment system of claim 1, wherein said Barker sequence is a Barker 7 sequence.

5. The magnetic attachment system of claim 1, wherein said Barker sequence is a Barker 11 sequence.

6. The magnetic attachment system of claim 1, wherein said Barker sequence is a Barker 13 sequence.

7. The magnetic attachment system of claim 1, further comprising:

a first intermediate layer on a first side of said first array of magnetic field sources corresponding to an interface boundary, said first intermediate layer suppressing spatial forces between said magnetic attachment system and said complementary magnetic attachment system.

8. The magnetic attachment system of claim 7, further comprising:

a second intermediate layer attached to a second side of said first array of magnetic field sources that is opposite of said first side, said second intermediate layer being saturable.

9. The magnetic attachment system of claim 1, further comprising:

a first intermediate layer attached to a first side of said second array of magnetic field sources corresponding to said interface boundary, said first intermediate layer suppressing spatial forces between said magnetic attachment system and said complementary magnetic attachment system.

10. The magnetic attachment system of claim 9, further comprising:

a second intermediate layer attached to a second side of said second array of magnetic field sources that is opposite of said first side, said second intermediate layer being saturable.

11. The magnetic attachment system of claim 1, wherein movement of said first array of magnetic field sources is mechanically constrained to a single degree of freedom.

12. The magnetic attachment system of claim 11, wherein said first array of magnetic field sources can move perpendicular to said interface boundary.

13. The magnetic attachment system of claim 11, wherein movement of said first magnetic structure is restricted by container walls.

14. The magnetic attachment system of claim 1, wherein movement of said second array of magnetic field sources is mechanically constrained to a single degree of freedom.

15. The magnetic attachment system of claim 4, wherein said second array of magnetic field sources can move perpendicular to said interface boundary.

16. The magnetic attachment system of claim 4, wherein movement of said first magnetic structure is restricted by container walls.

17. The magnetic attachment system of claim 1, wherein movement of said first array of magnetic field sources is controlled by a spring.

18. The magnetic attachment system of claim 1, wherein movement of said second array of magnetic field sources is controlled by a spring.

19. The magnetic attachment system of claim 1, further comprising:

a hinge.