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Adaptive restraint system with retractor pretensioner

  • US 20060082126A1
  • Filed: 10/19/2004
  • Published: 04/20/2006
  • Est. Priority Date: 10/19/2004
  • Status: Active Grant
First Claim
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1. An adaptive restraint system for an automobile having a seat for an occupant, the system comprising:

  • a crash sensor for detecting a potential crash event;

    an occupant sensor for estimating a relative size of the occupant;

    a seat belt for restraining the occupant in the seat;

    a retractor having a spindle receiving the webbing of the seat belt, the retractor further including a first force limiting element connected to the spindle;

    a belt anchorage pretensioner operatively connected to the seat belt for providing pretensioning of the seat belt;

    a retractor pretensioner operatively connected to the seat belt for providing pretentioning of the seat belt, the retractor pretensioner connected to the spindle of the retractor via a second force limiting element; and

    a controller receiving signals from the crash sensor and the occupant sensor, the controller operable in at least two modes including, a first mode wherein the controller effects activation of both the belt anchorage pretensioner and the retractor pretensioner when the occupant is estimated to be above a predetermined size, and a second mode wherein the controller effects activation of only the belt anchorage pretensioner when the occupant is estimated to be at or below the predetermined size.

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