Patent ID: 11915863
Assignee: ZABER TECHNOLOGIES INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 56:
57. The apparatus according to claim 46 further comprising:
a third permanent magnet assembly carried by the first part and comprising a third array of permanent magnets arranged to form a multipolar magnet array comprising a plurality of magnetic poles, the magnetic poles extending in the direction of motion,
wherein the permanent magnets of the third array have polarizations directed in a first transverse direction transverse to the direction of motion, the polarization of the permanent magnets of the third array is substantially uniform along the direction of motion and the polarization of the permanent magnets of the third array alternates in orientation along the first transverse direction at regular intervals along a second transverse direction orthogonal to the direction of motion and the first transverse direction when the third array of permanent magnets is traversed in the second transverse direction,
a fourth permanent magnet assembly carried by the second part and comprising a fourth array of permanent magnets arranged to form a multipolar magnet array comprising magnetic poles extending in the direction of motion, wherein the permanent magnets of the fourth array have a polarization that is substantially aligned with the first transverse direction and a number of the magnetic poles in the third and fourth arrays are equal,
wherein the polarization of the permanent magnets of the fourth array is substantially uniform along the direction of motion and the polarization of the permanent magnets of the fourth array alternates in orientation along the first transverse direction at regular intervals along the second transverse direction when the second array of permanent magnets is traversed in the second transverse direction,
wherein the first and third arrays are oriented so that a side of the first array on which magnetic flux from the permanent magnets of the first array is concentrated faces in a direction opposite to a side of the third array on which magnetic flux from the permanent magnets of the third array is concentrated, wherein the second and fourth arrays are oriented so that a side of the second array on which magnetic flux from the permanent magnets of the second array is concentrated faces in a direction opposite to a side of the fourth array on which magnetic flux from the permanent magnets of the fourth array is concentrated,
wherein the magnets of the third array are spaced apart from the magnets of the fourth array in the first transverse direction by a second gap.