Rollover seat system

摘要

A vehicle seat system for a vehicle seat mounted on the vehicle floor is provided including a resilient vehicle seat bun for normally supporting a seated occupant at a given height above the vehicle floor; a lap restraint to cross over the seated occupant to restrain the occupant in the vehicle seat; a belt wrench tensionally associated with the lap restraint to tension the lap restraint to an extent to significantly pull down toward the vehicle floor the seated occupant into the seat bun such that the seated occupant's head is brought closer to the floor; and a sensor to activate the belt wrench when the vehicle undergoes a displacement condition indicative of a vehicle rollover condition.