The invention relates to a hybrid inflator (10) includes at least one combustion chamber (15) in which propellant charge is arranged and which has a discharge end (20), the propellant charge being formed of at least one propellant element (26), at least one igniting unit (12) by which the propellant charge can be ignited. The hybrid inflator (10) also includes at least one bursting element (14, 14, 14) which in the inactivated state of the hybrid inflator (10) delimits the combustion chamber (15) against a gas supply chamber (16) at the discharge end (20). The bursting element (14, 14, 14) and a restraint element (18, 18, 18) maintain the propellant charge in its position and/or the bursting element (14, 14, 14) and the propellant charge delimit a shock gas volume (SGV), wherein in the activated state of the hybrid inflator (10) the shock gas volume (SGV) acts on the bursting element (14, 14, 14) like a gas pressure spring.

The invention relates to a hybrid inflator (10) includes at least one combustion chamber (15) in which propellant charge is arranged and which has a discharge end (20), the propellant charge being formed of at least one propellant element (26), at least one igniting unit (12) by which the propellant charge can be ignited. The hybrid inflator (10) also includes at least one bursting element (14, 14, 14) which in the inactivated state of the hybrid inflator (10) delimits the combustion chamber (15) against a gas supply chamber (16) at the discharge end (20). The bursting element (14, 14, 14) and a restraint element (18, 18, 18) maintain the propellant charge in its position and/or the bursting element (14, 14, 14) and the propellant charge delimit a shock gas volume (SGV), wherein in the activated state of the hybrid inflator (10) the shock gas volume (SGV) acts on the bursting element (14, 14, 14) like a gas pressure spring.

The present invention provides a gas generator, including: an ignition device chamber arranged at a first end opening of a cylindrical housing; a diffuser portion provided with a gas discharge port and arranged at a second end opening opposite to the first end opening in a longitudinal axial direction of the cylindrical housing; a pressurized gas chamber arranged between the ignition device chamber and the diffuser portion; a first rupturable plate closing the first end opening between the ignition device chamber and the pressurized gas chamber; a second rupturable plate closing the second end opening between the pressurized gas chamber and the diffuser portion; an igniter and a molded article of a gas generating agent being accommodated in the ignition device chamber; a gas which serves as a gas source being charged in the pressurized gas chamber under a high pressure; and an amount A (J/msec) of energy generated per unit time from the molded article of the gas generating agent charged in the ignition device chamber, a cross-sectional area B (cm.sup.2), orthogonal to the longitudinal axial direction of the cylindrical housing, of the pressurized gas chamber at a portion proximate to the ignition device chamber, and a density C (g/cm.sup.3) of the gas charged in the pressurized gas chamber satisfying an energy control factor represented by the following equation (I):

A/BC=320 to 490(I).

The present invention provides a gas generator, including: an ignition device chamber arranged at a first end opening of a cylindrical housing; a diffuser portion provided with a gas discharge port and arranged at a second end opening opposite to the first end opening in a longitudinal axial direction of the cylindrical housing; a pressurized gas chamber arranged between the ignition device chamber and the diffuser portion; a first rupturable plate closing the first end opening between the ignition device chamber and the pressurized gas chamber; a second rupturable plate closing the second end opening between the pressurized gas chamber and the diffuser portion; an igniter and a molded article of a gas generating agent being accommodated in the ignition device chamber; a gas which serves as a gas source being charged in the pressurized gas chamber under a high pressure; and an amount A (J/msec) of energy generated per unit time from the molded article of the gas generating agent charged in the ignition device chamber, a cross-sectional area B (cm.sup.2), orthogonal to the longitudinal axial direction of the cylindrical housing, of the pressurized gas chamber at a portion proximate to the ignition device chamber, and a density C (g/cm.sup.3) of the gas charged in the pressurized gas chamber satisfying an energy control factor represented by the following equation (I):

A/BC=320 to 490(I).

An inflator (10), especially for a vehicle safety system, includes a combustion chamber (16) in which a solid propellant (18) combustible under the generation of gas is accommodated, and a compressed gas chamber (24) containing compressed gas (26), wherein even in the non-activated state of the inflator (10) a fluid communication exists between the combustion chamber (16) and the compressed gas chamber (24). The compressed gas (26) contains at least one inert gas as well as oxygen and at least one combustible gas, wherein the combustible gas is provided at a concentration at which no self-supporting conversion of the combustible gas with oxygen takes place.

An inflator (10), especially for a vehicle safety system, includes a combustion chamber (16) in which a solid propellant (18) combustible under the generation of gas is accommodated, and a compressed gas chamber (24) containing compressed gas (26), wherein even in the non-activated state of the inflator (10) a fluid communication exists between the combustion chamber (16) and the compressed gas chamber (24). The compressed gas (26) contains at least one inert gas as well as oxygen and at least one combustible gas, wherein the combustible gas is provided at a concentration at which no self-supporting conversion of the combustible gas with oxygen takes place.

The invention relates to an apparatus (10) for fastening a gas generator (11) in an oscillatory manner as a vibration damping mass inside an airbag module. A fastening ring (12) provided for fastening the gas generator (11) has at least one elastic section (14) and at least one reinforcement insert (15) for reinforcing the fastening ring (12) and securing the fastening ring (12) to the gas generator. A surface of the reinforcement insert (15) is made at least in part of plastic.

The invention relates to an apparatus (10) for fastening a gas generator (11) in an oscillatory manner as a vibration damping mass inside an airbag module. A fastening ring (12) provided for fastening the gas generator (11) has at least one elastic section (14) and at least one reinforcement insert (15) for reinforcing the fastening ring (12) and securing the fastening ring (12) to the gas generator. A surface of the reinforcement insert (15) is made at least in part of plastic.

An ignition device assembly includes an ignition device including an igniter body and an igniter collar member, and a housing including a tubular fixing portion to which the igniter collar member is fixed. The tubular fixing portion includes a crimping fixing portion. The igniter collar member includes a tubular wall portion having a tubular shape, made of metal, and including a connector connection space formed inside, the tubular wall portion being crimped by a crimping fixing portion, an opening end forming portion including a resin region portion and a metal region portion, extending from a tip side of the tubular wall portion and forming an opening end of the connector connection space, and a crimping tip surface opposing region portion. At least a part of the crimping tip surface opposing region portion is formed by the metal region portion.

A filter for an inflator includes a rolled sheet centered on an axis or three dimensionally printed as a whole and including a plurality of openings. A deflector is associated with each opening for directing inflation fluid in a non-radial direction relative to the axis.