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Airbag system

  • US 7,784,819 B2
  • Filed: 02/14/2008
  • Issued: 08/31/2010
  • Est. Priority Date: 02/14/2008
  • Status: Expired due to Fees
First Claim
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1. An airbag system, comprising:

  • an airbag housing having a cavity configured to store an airbag, the cavity having an aperture providing an outlet for the airbag during deployment; and

    a cover releasably attached over the aperture via an attachment mechanism having an initial attachment strength, wherein the attachment mechanism is at least partially formed from at least one of a shape memory alloy, a shape memory polymer, an electro active polymer, a piezo electric, a magnetorheological elastomer, or an electrorheological elastomer;

    wherein the initial attachment strength is configured to reduce to a release attachment strength in response to receipt of a release signal at the attachment mechanism;

    wherein the release signal is provided in response to one of a preliminary impact condition, an impact condition, an occupant environment condition, or a manual input; and

    wherein the attachment mechanism is configured to increase substantially from the release attachment strength to the initial attachment strength in response to a triggering event.

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