# US 12,215,753 B2 · Sound isolation suspension system

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- Number: US 12,215,753 B2
- Document ID: US12215753B2
- Status: Granted
- Kind: B2
- Application number: 17/770,403
- Filed: 2020-10-16
- Published: 2022-12-01
- Granted: 2025-02-04
- Earliest claimed: 2019-10-21
- Assignees: Koninklijke Philips N.V.
- Applicants: Koninklijke Philips N.V.
- Inventors: Kevin Arnold Miller; Michiel Allan Aurelius Schallig; Hermanus Mathias Joannes Rene Soemers; Daniel James Faulkner
- Web page: https://patentgrep.com/patent/US12215753B2

## CPC

- F16F 15/04: using elastic means (single elements or their attachment F16F1/00 - F16F13/00); {(F16F15/023, F16F15/03 take precedence)}
- F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION

## Abstract

A suspension system (22) configured to minimize transmission of acoustic and vibrational energy in a device, comprising: (i) a rigid support (24): (ii) an operative element (16) positioned within the rigid support and comprising a drive frequency when the device is in operation; and (iii) a resilient element (26) engaging the rigid support and configured to create a resilient force against vibrations generated by the operative element in one or more degrees of freedom: wherein the natural frequency of a suspension mode in one or more of the degrees of freedom are tuned into a narrow resonant frequency range by the suspension, and wherein the resonant frequency is greater than the drive frequency.

## Claims

### Claim 1

A suspension system configured to minimize transmission of acoustic and vibrational energy in a device, comprising:
a rigid support;
an operative element positioned within the rigid support and comprising a drive frequency when the device is in operation;
a first resilient element comprising a coil spring, the first resilient element engaging the rigid support and configured to create a resilient force against vibrations generated by the operative element in one or more degrees of freedom, wherein a natural frequency of a suspension mode in one or more of the degrees of freedom are tuned into a narrow resonant frequency range by the suspension, and wherein the resonant frequency is greater than the drive frequency; and
a second resilient element comprising an elastomer, the second resilient element engaging the rigid support, wherein natural frequencies in one or more of the degrees of freedom of the suspension system are tuned into a narrow resonant frequency range in part by the second resilient element.

### Claim 2 (depends on 1)

The suspension system of claim 1, wherein the resilient element is configured to create a resilient force against all six degrees of freedom of vibrations generated by the operative element.

### Claim 3 (depends on 1)

The suspension system of claim 1, wherein the resonant frequency of the suspension system is 10 or more Hertz above the drive frequency.

### Claim 4 (depends on 1)

The suspension system of claim 1, wherein the resonant frequency of the suspension system is less than 85 Hertz.

### Claim 5 (depends on 1)

The suspension system of claim 1, wherein the drive frequency is less than 60 Hertz.

### Claim 6 (depends on 1)

The suspension system of claim 1, wherein the drive frequency is between approximately 10 and 30 Hertz.

### Claim 7

A device comprising a suspension system configured to minimize transmission of acoustic and vibrational energy generated by the device, comprising:
a housing;
an operative assembly positioned within the housing and comprising a drive frequency when the device is in operation;
a first resilient element comprising a coil spring and configured to create a resilient force against vibrations generated by the operative assembly in one or more degrees of freedom, wherein a natural frequency of a suspension mode in one or more of the degrees of freedom are tuned into a narrow resonant frequency range by the suspension, and wherein the resonant frequency is greater than the drive frequency; and
a second resilient element comprising an elastomer and engaging a rigid support, wherein natural frequencies in one or more of the degrees of freedom of the suspension system are tuned into a narrow resonant frequency range in part by the second resilient element.

### Claim 8 (depends on 7)

The device of claim 7, further comprising a rigid support positioned between the housing and the operative assembly, wherein the operative assembly is positioned within the rigid support, and wherein resilient element connects the operative assembly to the rigid support.

### Claim 9 (depends on 7)

The device of claim 7, wherein the operative assembly is a pump assembly.

### Claim 10 (depends on 7)

The device of claim 7, wherein the resonant frequency of the suspension system is 10 or more Hertz above the drive frequency.

### Claim 11 (depends on 7)

The device of claim 7, wherein the resonant frequency of the suspension system is less than 85 Hertz.

### Claim 12 (depends on 7)

The device of claim 7, wherein the drive frequency is less than 60 Hertz.

### Claim 13 (depends on 7)

The device of claim 7, wherein the drive frequency is between approximately 10 and 30 Hertz.