Importance

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Abstract

An inflatable restraint system with selectable ventilation, including a base plate defining a vent aperture, an inflatable cushion secured to the base plate, and a single conventional inflator for inflating the inflatable cushion with inflation gas. In some vehicle impacts, the vent aperture remains sealed with a vent plug, which inhibits ventilation of the inflation gas from the inflatable cushion through the vent aperture. In other vehicle impacts, depending on the placement and force of the impact, the speed and direction of the vehicle, and the size and placement of the passengers, the energy absorption characteristics of the inflatable cushion may be controlled. This is accomplished by an initiator, which may be selectively activated to rupture the vent plug and thereby allow selective ventilation of the inflation gas through the vent aperture.

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First Claim