# US 10,119,524 B2 · Inertial energy accumulating device

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- Number: US 10,119,524 B2
- Document ID: US10119524B2
- Status: Granted
- Kind: B2
- Application number: 14/901,121
- Filed: 2014-07-02
- Published: 2016-05-19
- Granted: 2018-11-06
- Earliest claimed: 2013-07-04
- Assignees: S4 Energy B.V.
- Applicants: S4 Energy B.V.
- Inventors: Peter Teerlink
- Web page: https://patentgrep.com/patent/US10119524B2

## CPC

- F03G 3/08: using flywheels
- F03G: SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR (arrangements in connection with power supply in vehicles from force of nature B60K16/00; electric propulsion with power supply in vehicles from force of nature B60L8/00)

## Abstract

The invention relates to a device for accumulating inertial energy having a rotor chamber in housing, a rotor in the rotor chamber having a first end face and a substantially opposite second end face, the rotor being mounted, so that it can be displaced and rotate relative to the housing leaving free a gap between the outer rotor perimeter and the inner perimeter of the rotor chamber, wherein a seal is provided in said gap separating a first section of the rotor chamber and a second section of the rotor chamber, exposing means; creating a differential pressure over the rotor for levitation thereof, wherein the device further comprises stabilizing means for counteracting vibration of the rotor.

## Claims

### Claim 1

A device for accumulating inertial energy, comprising a housing defining a rotor chamber, a rotor having a first end face and a substantially opposite second end face, the rotor being mounted in the rotor chamber, so that it can be displaced relative to the housing and so that it can rotate relative to the housing about an axis of rotation leaving free a gap between the outer rotor perimeter and the inner perimeter of the rotor chamber, wherein a seal is provided in said gap separating a first section of the rotor chamber and a second section of the rotor chamber, a pump for exposing at least the first end face of the rotor in the first section to a gas pressure, which, by comparison with the pressure exerted upon the substantially opposite second end face in the second section, generates a differential pressure force that at least partially compensates for the weight of the rotor, wherein the device further comprises stabilizing means for counteracting vibration of the rotor.

### Claim 2 (depends on 1)

The device according to claim 1, wherein the stabilizing means are actively controlled.

### Claim 3 (depends on 1)

The device according to claim 1, wherein the rotor has a vertical rotation shaft, and wherein the stabilizing means act on the vertical rotation shaft.

### Claim 4 (depends on 1)

The device according to claim 1, wherein the stabilizing means comprise at least one voice coil actuator.

### Claim 5 (depends on 4)

The device according to claim 4, wherein the at least one voice coil actuator comprise at least one voice coil linear actuator.

### Claim 6 (depends on 5)

The device according to claim 5, wherein the at least one voice coil linear actuator is positioned on top of the vertical rotation shaft of the rotor.

### Claim 7 (depends on 1)

The device according to claim 1, further comprising means for determining displacement of the rotor with respect to a supporting structure of the device.

### Claim 8 (depends on 7)

The device of claim 7, wherein the means for determining displacement comprise means for determining vertical displacement of the rotor with respect to a supporting bearing of the device.

### Claim 9 (depends on 2)

The device according to claim 2, wherein the rotor has a vertical rotation shaft and wherein the stabilizing means act on the vertical rotation shaft.

### Claim 10 (depends on 2)

The device according to claim 2, wherein the stabilizing means comprise at least one voice coil actuator.

### Claim 11 (depends on 3)

The device according to claim 3, wherein the stabilizing means comprise at least one voice coil actuator.