# US 2013/0154247 A1 · Gasbag for a personal protection device

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- Number: US 2013/0154247 A1
- Document ID: US20130154247A1
- Status: Published application
- Kind: A1
- Application number: 13/720,718
- Filed: 2012-12-19
- Published: 2013-06-20
- Earliest claimed: 2011-12-20
- Assignees: GM Global Technology Operations LLC
- Inventors: Ulrich Rick
- Web page: https://patentgrep.com/patent/US20130154247A1

## CPC

- B60R 19/205: {inflatable in the direction of an obstacle upon impending impact, e.g. using air bags}
- B60R 21/235: characterised by their material
- B60R 21/36: using airbags
- B60R 21/205: in dashboards
- B60R 2021/23504: {characterised by material}
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR

## Abstract

A gasbag for a pneumatic personal protection device on a motor vehicle is provided. The gasbag has a membrane at least locally comprising an inner layer and an outer layer that exhibits a higher tolerance to a frictional load than the inner layer.

## Claims

### Claim 1

A gasbag for a pneumatic personal protection device on a motor vehicle, the gasbag having a membrane at least locally comprising:
an inner layer; and
an outer layer that exhibits a higher tolerance to a frictional load than the inner layer.

### Claim 2 (depends on 1)

The gasbag according to claim 1, wherein the outer layer forms a closed layer.

### Claim 3 (depends on 1)

The gasbag according to claim 1, wherein the outer layer comprises discrete wearing bodies individually secured to the inner layer.

### Claim 4 (depends on 3)

The gasbag according to claim 3, wherein the discrete wearing bodies are scaled.

### Claim 5 (depends on 4)

The gasbag according to claim 4, wherein the discrete wearing bodies are adhesively bonded to the inner layer.

### Claim 6 (depends on 4)

The gasbag according to claim 4, wherein fastening sections of the discrete wearing bodies pass through openings in the inner layer.

### Claim 7 (depends on 1)

The gasbag according to claim 1, wherein the outer layer is a fabric.

### Claim 8 (depends on 1)

The gasbag according to claim 1, wherein the inner layer is a fabric.

### Claim 9 (depends on 1)

The gasbag according to claim 1, wherein the inner layer and the outer layer form a fabric.

### Claim 10 (depends on 9)

The gasbag according to claim 9, wherein the inner layer and the outer layer are formed by different types of threads in the fabric.

### Claim 11 (depends on 1)

The gasbag according to claim 1, wherein the outer layer comprises aramide or PTFE.

### Claim 12

A motor vehicle with a gasbag having a membrane at least locally comprising an inner layer and an outer layer that exhibits a higher tolerance to a frictional load than the inner layer, wherein the gasbag is arranged on a bumper of the motor vehicle.

### Claim 13 (depends on 12)

The motor vehicle according to claim 12, wherein the gasbag is arranged on a front bumper of the motor vehicle.

### Claim 14 (depends on 12)

The motor vehicle according to claim 12, wherein the outer layer is provided on at least a part of the gasbag that faces a road in an expanded state.

### Claim 15

A motor vehicle with a gasbag having a membrane at least locally comprising an inner layer and an outer layer that exhibits a higher tolerance to a frictional load than the inner layer, wherein the gasbag is arranged in such a way as to expand through an opening, and wherein the outer layer is provided at least on a part of the gasbag that comes into frictional contact with an edge of the opening during expansion.

### Claim 16 (depends on 15)

The motor vehicle according to claim 15, wherein the outer layer exhibits an anisotropic coefficient of friction, and is oriented so as to minimize a coefficient of friction.