# US 10,369,956 B2 · Side airbag with necking chamber

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- Number: US 10,369,956 B2
- Document ID: US10369956B2
- Status: Granted
- Kind: B2
- Application number: 15/463,150
- Filed: 2017-03-20
- Published: 2018-09-20
- Granted: 2019-08-06
- Earliest claimed: 2017-03-20
- Assignees: Ford Global Technologies, LLC
- Applicants: Ford Global Technologies, LLC
- Inventors: Zhibing Deng; Deepak Patel; Krishnakanth E. Aekbote
- Web page: https://patentgrep.com/patent/US10369956B2

## CPC

- B60R 21/23138: {specially adapted for side protection (B60R21/23184, B60R21/232 take precedence)}
- B60R 21/207: in vehicle seats
- B60R 21/233: comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other (B60R21/232 takes precedence)
- B60R 21/2338: Tethers
- B60R 21/235: characterised by their material
- B60R 21/239: characterised by their venting means
- B60R 2021/0009: {Oblique collision}
- B60R 2021/0055: {Pelvis}
- B60R 2021/0058: {Shoulders}
- B60R 2021/23146: {seat mounted}
- B60R 2021/23308: {the individual compartments defining the external shape of the bag}
- B60R 2021/23324: {Inner walls crating separate compartments, e.g. communicating with vents}
- B60R 2021/23523: {Composite}
- B60R 2021/23542: {Weaving}
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR

## Abstract

A side airbag for a vehicle includes a main chamber and a necking chamber. The main chamber has an opening for connecting to an inflator and a first thickness in an inflated condition. The necking chamber is peripherally surrounded by the main chamber and is connected to the main chamber by a restrictive vent. The necking chamber has a second thickness in the inflated condition less than the first thickness and is aligned with a targeted body area.

## Claims

### Claim 1

A side airbag for a vehicle comprising:
a main chamber including an opening for connecting to an inflator and including a first airbag thickness in an inflated condition;
a necking chamber peripherally surrounded by the main chamber and connected thereto by a restrictive vent and including a second airbag thickness in the inflated condition less than the first airbag thickness and aligned with a targeted body area; and
a wall separating the main chamber from the necking chamber and in part defining the second airbag thickness;
wherein a plurality of restrictive vents are disposed in the wall.

### Claim 2 (depends on 1)

The side airbag of claim 1, wherein the opening for connecting to the inflator is at a rear of the airbag in the inflated condition and no restrictive vent is on a rear side of the necking chamber.

### Claim 3 (depends on 1)

The side airbag of claim 1, wherein the airbag in the inflated condition is sized to extend substantially from a seat bottom to a top of a seat back.

### Claim 4 (depends on 1)

The side airbag of claim 1, wherein the targeted body area is one of a rear rib-cage area and a pelvic area.

### Claim 5

A side airbag module for a passenger vehicle comprising:
a housing shaped for mounting in a seat back;
an inflator connected to the housing; and
an airbag disposed in the housing in a deflated condition and including:
a main chamber including an opening for receiving an inflator and including a first airbag thickness in an inflated condition,
a necking chamber peripherally surrounded by the main chamber connected thereto by a restrictive vent and including a second airbag thickness in the inflated condition less than the first airbag thickness and aligned with a targeted body area; and
a wall separating the main chamber from the necking chamber and in part defining the second airbag thickness;
wherein a plurality of restrictive vents are disposed in the wall.

### Claim 6 (depends on 5)

The module of claim 5, wherein the opening for connecting to the inflator is at a rear of the airbag in the inflated condition and no restrictive vent is on a rear side of the necking chamber.

### Claim 7 (depends on 5)

The module of claim 5, wherein the airbag in the inflated condition is sized to extend substantially from a seat bottom to a top of a seat back.

### Claim 8 (depends on 5)

The module of claim 5, wherein the targeted body area is one of a rear rib-cage area and a pelvic area.

### Claim 9

A side airbag system for use in a passenger vehicle comprising:
a seat back including a cover; and
a side airbag module shaped for mounting in a seat back fixed to the seat back beneath the cover, the side airbag module including:
a housing shaped for mounting in a seat back,
an inflator connected to the housing, and
an airbag disposed in the housing in a deflated condition and including:
a main chamber including a part of the inflator disposed therein and including a first airbag thickness in an inflated condition, and
a necking chamber peripherally surrounded by the main chamber connected thereto by a restrictive vent and including a second airbag thickness in the inflated condition less than the first airbag thickness and aligned with a targeted body area;
a wall separating the main chamber from the necking chamber and in part defining the second airbag thickness;
wherein a plurality of restrictive vents are disposed in the wall with none of the vents being in a rear portion of the wall.

### Claim 10 (depends on 9)

The side airbag system of claim 9, wherein the airbag in the inflated condition is sized to extend substantially from a seat bottom to a top of a seat back.

### Claim 11 (depends on 9)

The side airbag system of claim 9, wherein the targeted body area is one of a rear rib-cage area and a pelvic area.