Method for detachment of two objects

• US 8,514,046 B1
• Filed: 09/28/2012
• Issued: 08/20/2013
• Est. Priority Date: 03/24/2011
• Status: Expired due to Fees

• Current Assignee: Correlated Magnetics Research, LLC
• Original Assignee: Correlated Magnetics Research, LLC
• Inventors: Fullerton, Larry W., Roberts, Mark D., Fechner, Ryan, Loum, Kelly
• Primary Examiner(s): BARRERA, RAMON M
• Application Number:
  US13/629,879
• Time in Patent Office: 326 Days
• Field of Search: 335/285, 335/296, 335/306, 335205-207, 310/90.5
• US Class Current: 335/306
• CPC Class Codes: E05B 65/006 for covers or panels for manholes E02D29/1427; for holes enabling access to installations in buildings E04F19/08; for pressure vessels F16J13/00
• CPC Class Codes: E05C 19/16 Devices holding the wing by magnetic or electromagnetic attraction E05C17/56 takes precedence
• CPC Class Codes: E06B 5/00 Doors, windows, or like closures for special purposes insulated compound frames specially adapted for sliding doors or windows E06B3/26347; Border constructions therefor
• CPC Class Codes: G06F 1/1616 with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
• CPC Class Codes: G06F 1/1677 for detecting open or closed state or particular intermediate positions assumed by movable parts of the enclosure, e.g. detection of display lid position with respect to main body in a laptop, detection of opening of the cover of battery compartment
• CPC Class Codes: G06F 1/1679 for locking or maintaining the movable parts of the enclosure in a fixed position, e.g. latching mechanism at the edge of the display in a laptop or for the screen protective cover of a PDA G06F1/1681 takes precedence
• 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 7/04 Means for releasing the attractive force

Abstract

A method is described herein for detachment of two objects. The method comprising the steps of: (a) associating a bias field source with a first magnetic structure associated with a first object, the first magnetic structure comprising one or more magnetic field sources, the first magnetic structure being magnetically attached to a second magnetic structure associated with a second object, the second magnetic structure comprising one or more magnetic field sources; and (b) using the bias field source to produce a repel force large enough to cause detachment of the first magnetic structure from the second magnetic structure thereby causing detachment of the first object from the second object.

Claims

1. A method for detachment of two objects, said method comprising:

providing a multi-level magnetic system, said multi-level magnetic system comprising a first magnetic structure and a second magnetic structure, said first magnetic structure being associated with a first object, said second magnetic structure being associated with a second object, said multi-level magnetic system producing at least two layers of multi-level magnetism, said at least two layers of multi-level magnetism including an inner attractive layer that transitions to an outer repel layer at a transition distance between said first magnetic structure and said second magnetic structure, said first magnetic structure comprising a plurality of first permanent magnetic field sources, said first magnetic structure being separated from said second magnetic structure by a first distance that is less than said transition distance such that said first magnetic structure is magnetically attached to said second magnetic structure thereby causing attachment of said first object to said second object, said second magnetic structure comprising one or more second permanent magnetic field sources;

associating a bias field source with said multi-level magnetic system, said bias field source being a magnetic field source separate from said plurality of first permanent magnetic field sources and said one or more second permanent magnetic field sources; and

using said bias field source to produce a repel force that is added to said at least two layers of multi-level magnetism produced by said multi-level magnetic system, said repel force being large enough to cause said first magnetic structure to separate from said second magnetic structure by a second distance that is greater than said transition distance causing said first magnetic structure to repel said second magnetic structure thereby causing detachment of said first object from said second object.

2. The method of claim 1, wherein said repel force is greater than a peak attract force produced by said first magnetic structure and said second magnetic structure.

3. The method of claim 1, wherein said bias field source comprises an electromagnet.

4. The method of claim 3, wherein said electromagnet comprises a core.

5. The method of claim 1, wherein said bias field source comprises a permanent magnet.

6. The method of claim 1, wherein said bias field source produces a coded bias field.

7. The method of claim 1, further comprising:

providing a spacer between said first magnetic structure and said second magnetic structure.

8. The method of claim 1, wherein the movement of at least one of said first magnetic structure or said second magnetic structure is constrained.

9. The method of claim 1, wherein said plurality of first permanent magnetic field sources have positions and polarities in accordance with a code.

10. The method of claim 9, wherein said code is one of a pseudorandom code, a deterministic code, or a designed code.

11. The method of claim 9, wherein said code is one of a one dimensional code and a two dimensional code.

12. The method of claim 1, wherein said first second magnetic structure is a conventional dipole permanent magnet.

13. The method of claim 1, wherein said second magnetic structure comprises a plurality of second permanent magnetic field sources.

14. The method of claim 13, wherein said plurality of second permanent magnetic field sources have positions and polarities in accordance with a code.

15. The method of claim 14, wherein said code is one of a pseudorandom code, a deterministic code, or a designed code.

16. The method of claim 14, wherein said code is one of a one dimensional code and a two dimensional code.

17. The method of claim 14, wherein said first magnetic structure and said second magnetic structure have a spatial force function that includes at least one attractive spatial force and at least one repellant spatial force.

18. The method of claim 1, further comprising:

disassociating said bias field source from said multi-level magnetic system.