Patent ID: 8528482

Claim:
A hybrid gas generator, comprising: a high pressure gas cylinder formed with a discharging port at an open end; and a gas release actuating device comprising: a pyrotechnic gas cylinder with an open end hermetically connected with the discharging port; an igniting assembly provided at another open end of the pyrotechnic gas cylinder for receiving a triggering signal to ignite; and a bursting disc disposed in the discharging port to prevent the gas from being discharged; wherein the pyrotechnic gas cylinder further comprises: a guide ring securely disposed in the pyrotechnic gas cylinder to hermetically separate the space in the pyrotechnic gas cylinder into a gas releasing chamber and a firing chamber; and a piercing plug fitted with the guide ring and positioned toward the bursting disc to dislodge from the guide ring to break the bursting disc when an inner pressure in the firing chamber exceeds a predetermined threshold; wherein the gas releasing chamber is formed with at least a vent for releasing the gas stored in the high pressure gas cylinder, and the firing chamber is configured to be filled with gas producing medium to produce gas for driving the piercing plug when the igniting assembly is ignited, wherein after the piercing plug is dislodged from the guide ring to break the bursting disc, the firing chamber becomes in fluid communication with the gas releasing chamber.