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US 6,273,453 B1Granted
Air bag with at least one foamable chamber
AssigneeAutoliv Development AB
InventorsGuido Satzger, Alois Juchem, Sven Rau, Peter Tiefenthaler
Life of this patent
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Abstract
An occupant impact protection system with an airbag that inflates when triggered whereby the protective effect of the inflated airbag is to be maintained beyond its service life. For this purpose it is provided that the airbag be foamable by means of particles introduced therein that are made of plastic that foam when activated and that are activated together with the introduction of the gas produced by the gas generator and a solid structure is formed for impact protection after the plastic foam hardens.
Claims20
An occupant impact protection system, comprising:
- an airbag that upon activation is inflated from a folded, installed state;
- at least one gas generator that contains a gas-producing material and is activated by an ignition device for producing a quantity of gas required to inflate said airbag;
- and
- particles of polymeric material that foam when activated, wherein said particles are adapted to be introduced into said airbag for at least partially foaming out said airbag, wherein said particles are adapted to be activated together with introduction of gas from said gas generator into said airbag, and wherein said particles, after foaming, are adapted to harden into a solid structure as impact protection.
1 more element
Dependencies are inferred from the claim text.