# US 11,309,778 B2 · Multi-tunnel electric motor/generator

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- Number: US 11,309,778 B2
- Document ID: US11309778B2
- Status: Granted
- Kind: B2
- Application number: 16/293,515
- Filed: 2019-03-05
- Published: 2019-06-27
- Granted: 2022-04-19
- Earliest claimed: 2016-09-05
- Assignees: Linear Labs, Inc.
- Applicants: Linear Labs, LLC
- Inventors: Fred E. Hunstable
- Web page: https://patentgrep.com/patent/US11309778B2

## CPC

- H02K 21/125: {having an annular armature coil (H02K21/14 - H02K21/24 take precedence)}
- H02K 21/16: having annular armature cores with salient poles (with homopolar co-operation H02K21/20)
- H02K 15/022: with salient poles
- H02K 21/12: with stationary armatures and rotating magnets
- H02K 21/22: with magnets rotating around the armatures, e.g. flywheel magnetos
- H02K 21/24: with magnets axially facing the armatures, e.g. hub-type cycle dynamos
- H02K 21/44: with armature windings wound upon the magnets
- H02K 2201/12: Transversal flux machines
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})

## Abstract

Disclosed are various embodiments for a motor/generator where the stator is a coil assembly and the rotor is a magnetic toroidal cylindrical tunnel or where the rotor is a coil assembly and the stator is a magnetic toroidal cylindrical tunnel.

## Claims

### Claim 1

A method of producing mechanical rotation, the method comprising:
forming a first area of magnetic concentration within a first interior cavity defined by an first outer magnetic cylinder wall having a first magnetic pole facing the interior cavity, a first inner magnetic cylinder wall having a second magnetic pole facing the interior cavity, a first magnetic wall having a third magnetic pole facing the interior cavity, and a first opposing magnetic wall having a fourth magnetic pole facing the interior cavity, wherein the first and second magnetic poles are of an opposite magnetic pole orientation from the third and fourth magnetic poles to form a NSNS magnetic pole configuration;
positioning a coil within the first interior cavity;
applying a current in a first direction to the coil to cause the coil to rotate relative to the first interior cavity; and
coupling a longitudinal shaft to the coil such that as the coil rotates, the longitudinal shaft rotates.

### Claim 2 (depends on 1)

The method of producing mechanical rotation of claim 1 further comprising:
forming a second area of magnetic concentration within a second interior cavity positioned circumferentially adjacent to the first interior cavity defined by a second outer magnetic cylinder wall having a fifth magnetic pole facing the interior cavity, a second inner magnetic cylinder wall having a sixth magnetic pole facing the interior cavity, a second magnetic wall having a seventh magnetic pole facing the interior cavity, and a second opposing magnetic wall having a eighth magnetic pole facing the interior cavity, wherein the fifth and sixth magnetic poles are of an opposite magnetic pole orientation from the seventh and eight magnetic poles to form a SNSN magnetic pole configuration;
applying a current in a first direction to the coil to cause the coil to move to the second interior cavity; and
applying a current in a second direction to the coil when the coil is within the second interior cavity to move the coil out of the second interior cavity.

### Claim 3

A method of producing electric current, the method comprising:
forming a first area of magnetic concentration within a first interior cavity defined by an first outer magnetic cylinder wall having a first magnetic pole facing the interior cavity, a first inner magnetic cylinder wall having a second magnetic pole facing the interior cavity, a first magnetic wall having a third magnetic pole facing the interior cavity, and a first opposing magnetic wall having a fourth magnetic pole facing the interior cavity, wherein the first and second magnetic poles are of an opposite magnetic pole orientation from the third and fourth magnetic poles to form a NSNS magnetic pole configuration;
rotating a coil within the first interior cavity; and
extracting from the coil a current having a first direction as the coil moves through the first interior cavity.

### Claim 4 (depends on 3)

The method of producing mechanical rotation of claim 3 further comprising:
forming a second area of magnetic concentration within a second interior cavity defined by an second outer magnetic cylinder wall having a fifth magnetic pole facing the interior cavity, a second inner magnetic cylinder wall having a sixth magnetic pole facing the interior cavity, a second magnetic wall having a seventh magnetic pole facing the interior cavity, and a second opposing magnetic wall having a eighth magnetic pole facing the interior cavity, wherein the fifth and sixth magnetic poles are of opposite polarities from the seventh and eight magnetic poles, wherein the first through fourth magnetic poles are of an opposite magnetic pole orientation than the fifth through eight magnetic poles to form a SNSN magnetic pole configuration;
rotating the coil within the second interior cavity; and
extracting from the coil a current having a second direction when the coil moves through the second interior cavity.