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Electronically controlled seat belt module

  • US 6,655,743 B1
  • Filed: 04/11/2002
  • Issued: 12/02/2003
  • Est. Priority Date: 04/11/2002
  • Status: Expired due to Fees
First Claim
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1. An electronically controlled seat belt module comprisinga shaft;

  • a spool rotatably mounted concentrically of said shaft for winding of a seat belt thereon;

    a first plurality of poles mounted on said shaft;

    a second plurality of poles mounted on said spool in alternating relation with said first plurality of poles;

    a magneto-rheological fluid disposed between adjacent poles of said first and said second plurality of poles; and

    at least one electromagnetic coil mounted between said shaft and said spool to create a magnetic field passing through said poles of said first and said second plurality of poles to change the viscosity of said fluid upon actuation of said coil.

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