SIDE CURTAIN AIR-BAG

• US 20090184497A1
• Filed: 03/24/2009
• Published: 07/23/2009
• Est. Priority Date: 10/31/2003
• Status: Active Grant

• Current Assignee: Autoliv AB (Autoliv Incorporated)
• Original Assignee: Autoliv AB (Autoliv Incorporated)
• Inventors: Kjell, Fredrik, Hellberg, Per, Berntsson, Mats, Lovqvist, Marcus
• Granted Patent: US 8,220,831 B2
• Time in Patent Office: Days
• US Class Current: 280/728.300
• CPC Class Codes: B60R 21/201 Packaging straps or envelopes for inflatable members
• CPC Class Codes: B60R 21/232 Curtain-type airbags deploying mainly in a vertical direction from their top edge
• CPC Class Codes: B60R 21/237 characterised by the way they are folded

Abstract

In at least one embodiment of the present invention, an inflatable curtain for a motor vehicle is provided. The inflatable curtain is formed of layers of fabric and is deployable from a rolled state forming a roll to an inflated state. The air-bag comprises part of the air-bag that forms the upper-most edge of the air-bag when the air-bag is in the inflated state extending downwardly from the roll to lie proximate a side part of the motor vehicle on which the air-bag is to be mounted. At least a portion of the roll is positioned above the upper-most edge in the rolled state and is driven downward below the upper-most edge during deployment to the inflated state. The air-bag further provides a gas flow duct. When the air-bag is in the rolled state, the gas flow duct is provided at the top part of the roll.

Claims

1. An inflatable curtain for a motor vehicle formed of layers of fabric and being deployable from a rolled state forming a roll to an inflated state, the air-bag comprising part of the air-bag that forms the upper-most edge of the air-bag when the air-bag is in the inflated state extending downwardly from the roll to lie proximate a side part of the motor vehicle on which the air-bag is to be mounted, wherein at least a portion of the roll is positioned above the upper-most edge in the rolled state and is driven downward below the upper-most edge during deployment to the inflated state, wherein the air-bag further provides a gas flow duct, the gas flow duct, when the air-bag is in the rolled state, being provided at the top part of the roll.

2. An air-bag according to claim 1 wherein the upper-most edge that is downwardly extending is a substantially uninflatable region of the air-bag provided with one or more mounting formations.

3. An air-bag according to claim 1 wherein the air-bag further comprises a mounting bracket.

4. An air-bag according to claim 1 wherein the air-bag in the rolled state is contained within a protective cover.

5. An air-bag according to claim 1 wherein the air-bag is rolled to form the rolled state in a direction towards the outboard side of the air-bag.