Abstract: A seat belt system for use in a vehicle, which includes a seat belt webbing for restraining an occupant of the vehicle, wherein the webbing includes a first end and a second end, wherein the first end of the webbing is attached to a retractor for either retracting the webbing or permitting withdrawal of the webbing, and wherein the second end of the webbing is connected to an anchor; a tongue mechanism connected to the webbing and positioned to separate the webbing into a lap portion and a shoulder portion; and a buckle mechanism configured to detachably couple with the tongue mechanism. The tongue mechanism is configured so that the tongue mechanism is slideably coupled to the webbing when the tension in the webbing is less than a cinching load, and when the tension in the webbing is equal to or greater than the cinching load the tongue mechanism applies a cinching force on the webbing to prevent the webbing from changing position relative to the tongue mechanism.

Abstract: A seat belt system for use in a vehicle, which includes a seat belt webbing for restraining an occupant of the vehicle, wherein the webbing includes a first end and a second end, wherein the first end of the webbing is attached to a retractor for either retracting the webbing or permitting withdrawal of the webbing, and wherein the second end of the webbing is connected to an anchor; a tongue mechanism connected to the webbing and positioned to separate the webbing into a lap portion and a shoulder portion; and a buckle mechanism configured to detachably couple with the tongue mechanism. The tongue mechanism is configured so that the tongue mechanism is slideably coupled to the webbing when the tension in the webbing is less than a cinching load, and when the tension in the webbing is equal to or greater than the cinching load the tongue mechanism applies a cinching force on the webbing to prevent the webbing from changing position relative to the tongue mechanism.