# US 2026/0066166 A1 · Dual yoke magnetization

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- Number: US 2026/0066166 A1
- Document ID: US20260066166A1
- Status: Published application
- Kind: A1
- Application number: 19/307,786
- Filed: 2025-08-22
- Published: 2026-03-05
- Earliest claimed: 2019-04-26
- Assignees: Honeywell International Inc.
- Applicants: Honeywell International Inc.
- Inventors: Prathap SUYAMBU; Paresh SANCHIHAR
- Web page: https://patentgrep.com/patent/US20260066166A1

## CPC

- H01F 7/081: {Magnetic constructions}
- H01F 13/003: {Methods and devices for magnetising permanent magnets (permanent magnets H01F7/02)}
- G01D 5/145: {influenced by the relative movement between the Hall device and magnetic fields (see G01R33/06)}
- H01F 7/0205: {Magnetic circuits with PM in general}
- H01F 7/021: {Construction of PM (H01F7/0278 takes precedence; PM compositions H01F1/032)}
- H01F 41/0273: {Imparting anisotropy (methods and devices for magnetising permanent magnets H01F13/003)}
- H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR

## Abstract

Methods, systems, and apparatuses are provided for dual yoke magnetization. Two magnetic yokes may be configured with spiral profiles. A first magnetic yoke of the two magnetic yokes may be disposed proximate to the first side of a substantially disc-shaped magnet, wherein the substantially disc-shaped magnet defines a cavity approximately at its center. A second magnetic yoke of the two magnetic yokes may be disposed proximate to a second side of the substantially disc-shaped magnet, wherein the second side is opposite the first side. Magnetization may be induced in the substantially disc-shaped magnet via activating the two magnetic yokes.

## Claims

### Claim 1

An apparatus comprising:
two magnetic yokes configured with spiral profiles, wherein:
a first magnetic yoke of the two magnetic yokes is disposed proximate to a first side of a substantially disc-shaped magnet, wherein the substantially disc-shaped magnet defines a cavity approximately at its center;
a second magnetic yoke of the two magnetic yokes is disposed proximate to a second side of the substantially disc-shaped magnet, wherein the second side is opposite the first side; and, the two magnetic yokes are configured to induce magnetization in the substantially disc-shaped magnet.

### Claim 2 (depends on 1)

The apparatus of claim 1, further comprising an assembly comprised of the first magnetic yoke, the substantially disc-shaped magnet, and the second magnetic yoke disposed within a cavity defined by a flange.

### Claim 3 (depends on 2)

The apparatus of claim 2, wherein the flange is comprised of a non-magnetic material or a magnetic material.

### Claim 4 (depends on 2)

The apparatus of claim 2, wherein the flange is comprised of a ferrous material.

### Claim 5 (depends on 1)

The apparatus of claim 1, wherein at least one of the two magnetic yokes is an electromagnet.

### Claim 6 (depends on 1)

The apparatus of claim 1, further comprising the two magnetic yokes configured such that the two magnetic yokes generate: uniform magnetization in the substantially disc-shaped magnet and uniform flux distribution.

### Claim 7 (depends on 1)

The apparatus of claim 1, wherein the spiral profiles are generated responsive to at least one first wire being wrapped around physical features of the first magnetic yoke of the two magnetic yokes and at least one second wire being wrapped around physical features of the second magnetic yoke of the two magnetic yokes such that the at least one first wire and the at least one second wire are spiraled around the first magnetic yoke and the second magnetic yoke, respectively.

### Claim 8

A system comprising:
a movable member whose movement describes a defined path; and
an off-axis angle position sensor for measuring an angle position of the movable member, wherein the off-axis angle position sensor is configured using two magnetic yokes having spiral profiles, wherein:
a first magnetic yoke of the two magnetic yokes is disposed proximate to a first side of a substantially disc-shaped magnet, wherein the substantially disc-shaped magnet defines a cavity approximately at its center;
a second magnetic yoke of the two magnetic yokes is disposed proximate to a second side of the substantially disc-shaped magnet, wherein the second side is opposite the first side; and, the two magnetic yokes are configured to induce magnetization in the substantially disc-shaped magnet.

### Claim 9 (depends on 8)

The system of claim 8, further comprising an assembly comprised of the first magnetic yoke, the substantially disc-shaped magnet, and the second magnetic yoke disposed within a cavity defined by a flange.

### Claim 10 (depends on 9)

The system of claim 9, wherein the flange is comprised of a non-magnetic material or a magnetic material.

### Claim 11 (depends on 9)

The system of claim 9, wherein the flange is comprised of a ferrous material.

### Claim 12 (depends on 8)

The system of claim 8, wherein at least one of the two magnetic yokes is an electromagnet.

### Claim 13 (depends on 8)

The system of claim 8, further comprising the two magnetic yokes configured such that the two magnetic yokes generate: uniform magnetization in the substantially disc-shaped magnet and uniform flux distribution.

### Claim 14 (depends on 8)

The system of claim 8, wherein the spiral profiles are generated responsive to at least one first wire being wrapped around physical features of the first magnetic yoke of the two magnetic yokes and at least one second wire being wrapped around physical features of the second magnetic yoke of the two magnetic yokes such that the at least one first wire and the at least one second wire are spiraled around the first magnetic yoke and the second magnetic yoke, respectively.

### Claim 15

A method comprising:
configuring two magnetic yokes with spiral profiles;
disposing a first magnetic yoke of the two magnetic yokes proximate to a first side of a substantially disc-shaped magnet, wherein the substantially disc-shaped magnet defines a cavity approximately at its center;
disposing a second magnetic yoke of the two magnetic yokes proximate to a second side of the substantially disc-shaped magnet, wherein the second side is opposite the first side; and, inducing magnetization in the substantially disc-shaped magnet via activating the two magnetic yokes.

### Claim 16 (depends on 15)

The method of claim 15, further comprising disposing an assembly comprised of the first magnetic yoke, the substantially disc-shaped magnet, and the second magnetic yoke into a cavity defined by a flange.

### Claim 17 (depends on 16)

The method of claim 16, wherein the flange is comprised of a non-magnetic material or a magnetic material.

### Claim 18 (depends on 16)

The method of claim 16, wherein the flange is comprised of a ferrous material.

### Claim 19 (depends on 15)

The method of claim 15, wherein at least one of the two magnetic yokes is an electromagnet.

### Claim 20 (depends on 15)

The method of claim 15, further comprising configuring the two magnetic yokes such that the two magnetic yokes generate: uniform magnetization in the substantially disc-shaped magnet and uniform flux distribution.
