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Pyrotechnic tether release assembly for inflatable airbags

  • US 8,408,585 B2
  • Filed: 03/22/2012
  • Issued: 04/02/2013
  • Est. Priority Date: 03/23/2011
  • Status: Active Grant
First Claim
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1. An inflatable airbag assembly comprising:

  • an inflatable airbag;

    a housing coupled to the inflatable airbag;

    a mounting member attached to the housing;

    a tether release assembly that is reversibly coupled to the mounting member,wherein the tether release assembly comprises a body portion, a pyrotechnic squib, and a piston, wherein the body portion comprises an interior chamber, wherein the pyrotechnic squib and the piston are within the interior chamber, and wherein the pyrotechnic squib, upon activation, causes the piston to act on the mounting member to uncouple the tether release assembly from the mounting member; and

    a tether reversibly attached to the body portion of the tether release assembly,wherein, when the tether release assembly becomes uncoupled from the mounting member, the tether becomes unattached from the tether release assembly such that the tether is released.

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