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BELT RETRACTOR UTILIZING ACTIVE MATERIAL ACTUATION

  • US 20090267339A1
  • Filed: 04/22/2009
  • Published: 10/29/2009
  • Est. Priority Date: 04/23/2008
  • Status: Active Grant
First Claim
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1. A seat belt retractor adapted for use with a seat belt presenting a first tensile load, said retractor comprising:

  • a tensioning mechanism coupled to the belt and including an active material element operable to undergo a reversible change in fundamental property when exposed to or occluded from an activation signal,said mechanism being configured to selectively adjust the tension in the belt to a second tensile load, as a result of the change.

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