Abstract: A replaceable side bolster module for a vehicle seat in which the bolster module includes an inflatable air cushion and a gas generator for inflating the air cushion. By providing an inflatable air cushion within a replaceable side bolster, following deployment of the air cushion, only the bolster needs to be replaced as opposed to replacing the entire vehicle seat. The foam pad of the replaceable side bolster module has a slit cut therein immediately adjacent to the inflatable air cushion providing a localized weakening of the foam pad. The air cushion deploys through this slit, thus the location of the slit serves to provide directional guidance to the deploying air cushion.

Abstract: A vehicle seat with an inflatable air cushion in which an air cushion module comprising the inflatable air cushion and a gas generator for inflating the air cushion is mounted to a hollow member of the seat frame. The gas generator is substantially contained within the seat frame to minimize the packaging space required for the air cushion module. In addition, back pressure release gas from the gas generator is directed into the hollow interior of the frame to avoid the discharge of hot gas directly into the seat foam where the foam may be damaged by the heat.