Asymmetrical magnet arrays

Patent metadata

Field	Value
Publication number	US-10777344-B2
Application number	US-201715675034-A
Country	US
Kind code	B2
Filing date	Aug 11, 2017
Priority date	Aug 12, 2016
Publication date	Sep 15, 2020
Grant date	Sep 15, 2020

Abstract

Magnet array structure and method for forming magnet array structure that includes a first magnet array including a first repeatable magnet arrangement and second magnet array including a second repeatable magnet arrangement. The first repeatable magnet arrangement includes a plurality of non-uniformly dimensioned magnetic elements and the second repeatable magnet arrangement includes a plurality of non-uniformly dimensioned magnetic elements. Further, the first repeatable magnet arrangement is offset from the second repeatable magnet arrangement to limit attraction forces between the first and second magnet arrays.

First claim

What is claimed:

1. A magnet array structure, comprising:
a first magnet array comprising successively arranged first magnet arrangements;
a second magnet array comprising successively arranged second magnet arrangements,
wherein each first magnet arrangement includes a plurality of non-uniformly dimensioned magnetic elements arranged to form a first pattern of non-uniformly dimensioned elements and each second magnet arrangement includes a plurality of non-uniformly dimensioned magnetic elements arranged to form a second pattern of non-uniformly dimensioned elements that is the same as the first pattern of non-uniformly dimensioned elements, and
wherein the first magnet array and the second magnet array have a fixed orientation in which the pattern of non-uniformly dimensioned elements of the first magnet arrangement is offset from the second pattern of non-uniformly dimensioned elements of the second magnet arrangement to limit attraction forces between the first and second magnet arrays.

2. The magnet array structure according to claim 1 , wherein the first and second magnet arrays are parallelly arranged, and
wherein the magnetic elements located at ends of the first pattern are positioned across from magnetic elements located in middle portions of adjacent second patterns.

3. The magnet array structure according to claim 2 , wherein the first and second magnet arrays are linear arrays.

4. The magnet array structure according to claim 2 , wherein the first and second magnet arrays are circular.

5. The magnet array structure according to claim 1 , wherein the non-uniformly dimensioned magnetic elements of the first magnet arrangement include a first plurality of magnetic elements having a plurality of at least one of widths and heights, and
wherein the non-uniformly dimensioned magnetic elements of the second magnet arrangement include a second plurality of magnetic elements having a plurality of at least one of widths and heights.

6. The magnet array structure, comprising:
a first magnet array including a first repeatable magnet arrangement;
second magnet array including a second repeatable magnet arrangement,
wherein the first repeatable magnet arrangement includes a plurality of non-uniformly dimensioned magnetic elements and the second repeatable magnet arrangement includes a plurality of non-uniformly dimensioned magnetic elements,
wherein the first repeatable magnet arrangement is offset from the second repeatable magnet arrangement to limit attraction forces between the first and second magnet arrays,
wherein the non-uniformly dimensioned magnetic elements of the first repeatable magnet arrangement include a first plurality of magnetic elements having a plurality of at least one of widths and heights and a plurality of magnetic flux orientations,
wherein the non-uniformly dimensioned magnetic elements of the second repeatable magnet arrangement include a second plurality of magnetic elements having a plurality of at least one of widths and heights and a plurality of magnetic flux orientations,
wherein the first plurality of magnetic elements having a plurality of at least one of widths and heights include at least one first magnetic element with at least one of a first width and first height, at least one second magnetic element with at least one of a second width and second height that is a multiple of that of the at least one first magnetic element, and at least one third magnetic element with at least one of a third width and third height that is a multiple of that of the at least one first magnetic element, and
wherein the second plurality of magnetic elements having a plurality of at least one of widths and heights include at least one fourth magnetic element with at least one of a fourth width and fourth height, at least one fifth magnetic element with at least one of a fifth width and fifth height that is a multiple of that of the at least one fourth magnetic element, and at least one sixth magnetic element with at least one of a sixth width and sixth height that is a multiple of that of the at least one fourth magnetic element.

7. The magnet array structure according to claim 6 , wherein the at least one of a first width and first height is one-third the at least one of the second width and second height, and the at least one of the second width and second height is one-third the at least one of the third width and third height, and
wherein the at least one of a fourth width and fourth height is one-third the at least one of the fifth width and fifth height, and the at least one of the fifth width and fifth height is one-third the at least one of the sixth width and sixth height.

8. The magnet array structure according to claim 7 , wherein the sixth magnetic element is arranged opposite two second magnetic elements and three first magnetic elements, and
wherein the third magnetic element is arranged opposite two fifth magnetic elements and three fourth magnetic elements.

9. The magnet array structure according to claim 1 , wherein, in the first magnet arrangement, a magnetic flux orientation of a first magnetic element in the first pattern is different from the magnetic flux orientation of magnetic elements adjacent the first magnetic element in the first pattern, and
wherein, in the first magnet arrangement, a magnetic flux orientation of a second magnetic element in the second pattern is different from the magnetic flux orientation of magnetic elements adjacent the second magnetic element in the second pattern.

10. The magnet array structure according to claim 1 , wherein adjacent magnetic elements of the first pattern have magnetic flux orientations offset 45° from each other, and
wherein adjacent magnetic elements of the second pattern have magnetic flux orientations offset 45° from each other.

11. The magnet array structure according to claim 10 , wherein, in the first pattern, the magnetic flux orientation of successively arranged magnetic element rotates counter-clockwise, and
wherein, in the second pattern, the magnetic flux orientation of successively arranged magnetic element rotates clockwise.

12. The magnet array structure according to claim 1 , further comprising a magnet housing,
wherein the magnetic elements of the first and second magnet arrangements are encased in the magnet housing.

13. A method for forming a magnet array structure, comprising:
forming a first magnet array comprising successively arranged first magnet arrangements;
forming a second magnet array comprising successively arranged second magnet arrangements,
wherein each first magnet arrangement includes a plurality of non-uniformly dimensioned magnetic elements arranged to form a first pattern of non-uniformly dimensioned elements and each second magnet arrangement includes a plurality of non-uniformly dimensioned magnetic elements arranged to form a second pattern of non-uniformly dimensioned elements that is the same as the first pattern of non-uniformly dimensioned elements, and
fixedly orienting the first magnet array and the second magnet array in such a manner that the first pattern of non-uniformly dimensioned elements of the first magnet arrangement is offset from the second pattern of non-uniformly dimensioned elements of the second magnet arrangement to limit attraction forces between the first and second magnet arrays.

14. The method according to claim 13 , wherein the non-uniformly dimensioned magnetic elements of the first magnet arrangement include a first plurality of magnetic elements having a plurality of at least one of widths and heights, and
wherein the non-uniformly dimensioned magnetic ele

Assignees

• Hyperloop Tech Inc

Inventors

• HANDMER Casey

Classifications

• H01F7/021 Primary

  Construction of PM (H01F7/0278 takes precedence; PM compositions H01F1/032) · CPC title

• H01F1/0036

  showing low dimensional magnetism, i.e. spin rearrangements due to a restriction of dimensions, e.g. showing giant magnetoresistivity, (H01F1/153, H01F1/42 and H01F10/00 take precedence; magnetoresistive sensors G01D5/16, G01R33/06; magnetoresistive recording G11B5/39; magnetic-field-controlled resistors H10N50/10) · CPC title

• H01F7/04

  Means for releasing the attractive force · CPC title