| abstract |
A gas generating device for an air bag which has a housing having a gas discharging port, an ignition means chamber having an ignition means placed therein, a combustion chamber having a gas generating agent held therein, and a cylindrical coolant filter arranged between the combustion chamber and the gas discharging port, wherein a combustion gas is discharged from the gas discharging port through the above coolant filter, and wherein the following requirements (a), (b) and (c): (a) the gas generating agent has a heating value of 10 to 30 kcal/mol, (b) the mass (g) of the coolant filter per one mol of the gas generated at the time of the combustion of the gas generating agent is 20 to 65 g/mol, and (c) the coolant filter has a thickness of 4.0 mm or more are satisfied. The above gas generating device for an air bag is characterized by having a lightweight coolant filter. |