×

Passenger restraint system

  • US 4,984,651 A
  • Filed: 02/08/1990
  • Issued: 01/15/1991
  • Est. Priority Date: 02/16/1989
  • Status: Expired due to Fees
First Claim
Patent Images

1. Passenger restraint system for motor vehicles comprising:

  • at least one safety belt including a lap belt portion and a shoulder belt portion for which belt tensioner means is provided;

    at least one airbag;

    at least one switch means is a belt lock of the safety belt for detecting a functional position of the safety belt;

    a sensor which transmits threshold signals at least in dependence on effective changes of speed of the vehicle;

    wherein an activation of the airbag and of the belt tensioner means takes place in dependence of a functional position of the safety belt as detected by the switch means;

    wherein there is an activatable belt-clamping device on the belt lock and an activatable belt pull-out detent for the shoulder belt portion of the safety belt;

    wherein the sensor transmits at least three different threshold signals; and

    wherein there is a control unit means which, when the safety belt is fastened and when a second of the three threshold signals occurs to indicate a moderate to serious accident, releases the airbag, arrests the belt-clamping device and releases the belt pull-out detent during an operative releasing period of the airbag and which, when the safety belt is fastened and when the third threshold signal occurs to indicate a very serious accident, arrests the belt pull-out detent.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×