Field emission system and method

• US 8,643,454 B2
• Filed: 04/02/2013
• Issued: 02/04/2014
• Est. Priority Date: 04/04/2008
• Status: Active Grant

• 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:
  US13/855,519
• Publication Number:
  US 20130222097A1
• Time in Patent Office: 308 Days
• Field of Search: 335/285, 335/306, 243/03
• US Class Current: 335/306
• 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 system, comprising:

a first magnetic structure comprising a first plurality of magnetic field sources having a first polarity pattern; and

a second magnetic structure comprising a second plurality of magnetic field sources having a second polarity pattern, said first magnetic structure and said second magnetic structure producing a peak spatial force when said first magnetic structure is in an aligned position with said second magnetic structure where said first polarity pattern is aligned with said second polarity pattern, said first magnetic structure and said second magnetic structure producing a plurality of off peak spatial forces including a plurality of release forces when said first magnetic structure and said second magnetic structure are in a corresponding plurality of misaligned positions where said first polarity pattern is misaligned with said second polarity pattern, each release force of said plurality of release forces resulting from the combined magnetic field sources of said first magnetic structure and said second magnetic structure cancelling each other to some extent causing the overall field strength of the combined magnetic field sources to be substantially dampened, wherein said first magnetic structure and said second magnetic structure each comprise N magnetic field source areas having substantially the same size and the ratio of the magnitude of the peak spatial force to the magnitude of the maximum off peak spatial force is substantially N.

2. The magnetic system of claim 1, wherein said first magnetic structure comprises magnetic field sources having different sizes.

3. The magnetic system of claim 1, wherein said first plurality of magnetic field sources are in a linear arrangement.

4. The magnetic system of claim 1, wherein said first plurality of magnetic field sources are in a cyclic arrangement.

5. The magnetic system of claim 1, wherein at least two magnetic field sources of said first plurality of magnetic field sources are magnetized in a single piece of material.

6. The magnetic system of claim 1, wherein at least two magnetic field sources of said first plurality of magnetic field sources are magnets.

7. The magnetic system of claim 1, wherein said peak spatial force is an attract force.

8. The magnetic system of claim 1, wherein said peak spatial force is a repel force.

9. The magnetic system of claim 1, wherein at least two off peak spatial forces of said plurality of off peak spatial forces are substantially a zero force due to cancellation of repel and attract forces.

10. The magnetic system of claim 1, wherein said first magnetic structure comprises a sequence of three first magnetic field sources that alternate in polarity.

11. A magnetic system, comprising:

a first magnetic structure comprising a first plurality of magnetic field sources having a first polarity pattern; and

a second magnetic structure comprising a second plurality of magnetic field sources having a second polarity pattern, said first magnetic structure and said second magnetic structure having a spatial force function comprising a peak force and a plurality of off peak forces, said peak force being produced when said first polarity pattern is aligned with said second polarity pattern, said plurality of off peak forces being produced when said first polarity pattern is misaligned with said second polarity pattern, said plurality of off peak forces including a plurality of release forces resulting from the combined magnetic field sources of said first magnetic structure and said second magnetic structure cancelling each other to some extent causing the overall field strength of the combined magnetic field sources to be substantially dampened, wherein said first magnetic structure and said second magnetic structure each comprise N magnetic field source areas having substantially the same size and the ratio of the magnitude of the peak force to the magnitude of the maximum off peak force is substantially N.

12. The magnetic system of claim 11, wherein said first magnetic structure comprises magnetic field sources having different sizes.

13. The magnetic system of claim 11, wherein said first plurality of magnetic field sources are in a linear arrangement.

14. The magnetic system of claim 11, wherein said first plurality of magnetic field sources are in a cyclic arrangement.

15. The magnetic system of claim 11, wherein at least two magnetic field sources of said first plurality of magnetic field sources are magnetized in a single piece of material.

16. The magnetic system of claim 11, wherein at least two magnetic field sources of said first plurality of magnetic field sources are magnets.

17. The magnetic system of claim 11, wherein said peak force is an attract force.

18. The magnetic system of claim 11, wherein said peak force is a repel force.

19. The magnetic system of claim 11, wherein at least two off peak forces of said plurality of off peak forces are substantially a zero force due to cancellation of repel and attract forces.

20. The magnetic system of claim 11, wherein said first magnetic structure comprises a sequence of three first magnetic field sources that alternate in polarity.