Magnet track for a transport device

Patent metadata

Field	Value
Publication number	US-10017333-B2
Application number	US-201715414656-A
Country	US
Kind code	B2
Filing date	Jan 25, 2017
Priority date	Jan 25, 2016
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

A magnet track for a transport device for moving an armature along the magnet track includes a plurality of linear sections each having an even number of magnets of alternating polarity disposed on a support. In curved regions of the magnet track, the polarity of two adjacent magnets of different sections is the same. A ferromagnetic spacer disposed in each V-shaped gap in the curved regions of the magnet track between the different sections so as to fill the gap.

First claim

What is claimed is:

1. A magnet track for a transport device for moving an armature along the magnet track, the magnet track comprising:
a plurality of linear sections each having an even number of magnets of alternating polarity disposed on a support, wherein, in curved regions of the magnet track, the polarity of two adjacent magnets of different sections is the same and there are a plurality of V-shaped gaps between the linear sections; and
a ferromagnetic spacer which is not a magnet disposed in each of the V-shaped gaps in the curved regions of the magnet track between the linear sections so as to fill the respective V-shaped gaps.

2. The magnet track as recited in claim 1 , wherein the spacers include a V-shaped ferromagnetic base plate and a ferromagnetic tooth disposed thereon.

3. The magnet track as recited in claim 2 , wherein a thickness of the base plate in a direction perpendicular to a plane of the magnet track corresponds to a thickness of the support.

4. The magnet track as recited in claim 2 , wherein a thickness of the tooth in a direction perpendicular to a plane of the magnet track corresponds to a thickness of the magnets.

5. The magnet track as recited in claim 2 , wherein a length of the tooth in a first direction that is transverse to a direction of the magnet track is greater than a length of the magnets in the first direction.

6. The magnet track as recited in claim 2 , wherein the tooth is bounded laterally and transversely to a direction of the magnet track by a curved shape.

7. The magnet track as recited in claim 1 , wherein the linear sections are identical to each other and the spacers are identical to each other.

8. The magnet track as recited in claim 1 , wherein, in linear regions of the magnet track, the polarity of adjacent magnets reverses at regular intervals across abutting sections.

9. A transport device having a linear drive, comprising:
a magnet track comprising:
a plurality of linear sections each having an even number of magnets of alternating polarity disposed on a support, wherein, in curved regions of the magnet track, the polarity of two adjacent magnets of different sections is the same and there are a plurality of V-shaped gaps between the linear sections; and
a ferromagnetic spacer which is not a magnet disposed in each of the V-shaped gaps in the curved regions of the magnet track between the linear sections so as to fill the respective V-shaped gaps,

wherein the linear sections and the spacers form a secondary element of the linear drive.

Assignees

• Etel Sa
• Etel Sa

Inventors

• Tamellini Valerio

Classifications

• B65G54/02 Primary

  electrostatic, electric, or magnetic · CPC title

• B65G21/2018

  for retaining the load on the load-carrying surface, (retaining loads by magnetic load-carriers, e.g. belts B65G15/58, chains B65G17/46; individual magnetic grippers B65G17/323) · CPC title

• H02K41/031

  of the permanent magnet type · CPC title

• H02K2213/12

  Machines characterised by the modularity of some components · CPC title

• H02K1/17

  Stator cores with permanent magnets · CPC title