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Vehicle occupant restraint system responsive to accelleration

  • US 5,740,041 A
  • Filed: 10/19/1995
  • Issued: 04/14/1998
  • Est. Priority Date: 10/25/1994
  • Status: Expired due to Fees
First Claim
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1. An occupant restraint system for a vehicle, an acceleration being generated on said vehicle when an external force is exerted on said vehicle, said occupant restraint system comprising:

  • restraining means for restraining a passenger in said vehicle when said external force exceeds a predetermined value;

    external force assuming means for assuming a magnitude and a direction of the external force exerted on said vehicle;

    projective magnitude calculating means for calculating a projective magnitude of a projective vector obtained from an external force vector corresponding to the external force, said external force vector obtained from the magnitude and the direction assumed by said external force assuming means, said projective vector being a projection of said external force vector with respect to a predetermined direction; and

    actuation determining means for determining actuation of said restraining means by comparing said projective magnitude with a predetermined threshold value so that said restraining means is actuated when said projective magnitude is greater than said predetermined threshold value.

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