Inertia reel having a pressure vessel for an inflatable restraint

It is an expansion type seat belt restricted system containing the shoulder belt anchor which counters a shoulder belt, an expansion restricted implement, an expansion type inertia reel, and the above-mentioned expansion type inertia reel. A knee belt and a knee belt inertia reel can still also be included by this system. The above-mentioned expansion type inertia reel includes the Webb anchor, the drum which has a pressure vessel, and the port which discharges the inflation gas from a pressure vessel to an expansion restricted implement. The above-mentioned expansion type inertia reel can also contain further the expansion pump which carries out flow 連通 with a pressure vessel. If arrangement is made, gas will flow into a pressure vessel through a port from an expansion pump, and will flow into an expansion restricted implement. The above-mentioned system includes the pressure operation lock mechanism which acts as Locke of the drum, when pressure is applied to the above-mentioned pressure vessel. The method of arranging the expansion restricted implement corresponding to this is also indicated.