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.

The present invention provides a closing structure which closes, with an igniter, an opening of a cylindrical housing used in a gas generator, the cylindrical housing provided with a stepped surface formed on an inner side of a circumferential wall on the side of the opening, and a distal end circumferential wall extending from the stepped surface to the opening, the igniter having an igniter main body, and an igniter collar surrounding part of the igniter main body and having an annular plate portion with a maximum outer diameter and a circumferential wall excluding the annular plate portion, the annular plate portion including, a first annular surface facing the ignition portion of the igniter main body, a second annular surface facing the electroconductive pin of the igniter main body, and an annular circumferential surface between the first annular surface and the second annular surface, a first annular circumferential edge at the boundary between the first annular surface and the annular circumferential surface, and a second annular circumferential edge at the boundary between the second annular surface and the annular circumferential surface, and the second annular circumferential edge provided with an inclined surface in three or more locations, and the first annular surface of the igniter collar being abutted against the stepped surface of the cylindrical housing, and the annular circumferential surface and the second annular circumferential edge of the igniter collar being abutted against the distal end circumferential wall.

The present invention provides a closing structure which closes, with an igniter, an opening of a cylindrical housing used in a gas generator, the cylindrical housing provided with a stepped surface formed on an inner side of a circumferential wall on the side of the opening, and a distal end circumferential wall extending from the stepped surface to the opening, the igniter having an igniter main body, and an igniter collar surrounding part of the igniter main body and having an annular plate portion with a maximum outer diameter and a circumferential wall excluding the annular plate portion, the annular plate portion including, a first annular surface facing the ignition portion of the igniter main body, a second annular surface facing the electroconductive pin of the igniter main body, and an annular circumferential surface between the first annular surface and the second annular surface, a first annular circumferential edge at the boundary between the first annular surface and the annular circumferential surface, and a second annular circumferential edge at the boundary between the second annular surface and the annular circumferential surface, and the second annular circumferential edge provided with an inclined surface in three or more locations, and the first annular surface of the igniter collar being abutted against the stepped surface of the cylindrical housing, and the annular circumferential surface and the second annular circumferential edge of the igniter collar being abutted against the distal end circumferential wall.

An airbag apparatus includes a gas generator, and an airbag. The airbag includes a first fabric inner tube and a second fabric inner tube, both surrounding at least a gas injecting portion of the gas generator to have a double tubular shape. Common portions of the first inner tube and the second inner tube in a tubular circumferential direction are coupled to an airbag main body by a coupling portion extending in a tubular length direction, and other common portions which are separated from the common portions of the first inner tube and the second inner tube by a central angle (a central angle in a state where the airbag is only deployed and not inflated) of 70 to 180 degrees about the gas generator in the tubular circumferential direction are coupled to each other by a coupling portion extending in the tubular length direction.

An airbag apparatus includes a gas generator, and an airbag. The airbag includes a first fabric inner tube and a second fabric inner tube, both surrounding at least a gas injecting portion of the gas generator to have a double tubular shape. Common portions of the first inner tube and the second inner tube in a tubular circumferential direction are coupled to an airbag main body by a coupling portion extending in a tubular length direction, and other common portions which are separated from the common portions of the first inner tube and the second inner tube by a central angle (a central angle in a state where the airbag is only deployed and not inflated) of 70 to 180 degrees about the gas generator in the tubular circumferential direction are coupled to each other by a coupling portion extending in the tubular length direction.

The present invention inflator (10) has an inflator housing (12), a diffuser (30), a frangible closure (40) and an igniter assembly (20). The igniter assembly (20) has an igniter housing (22), a squib (60) electrically actuated and fitted in an end of the igniter housing (22) and a retractable piston (50) affixed to the igniter housing (22). Upon actuation of the squib (60), the retractable piston (50) propels forward breaking the frangible closure (40) releasing gases pushing the piston (50) retractably back into or over the igniter housing (22) as the pressurized gas releases out of the diffuser (30).

The present invention inflator (10) has an inflator housing (12), a diffuser (30), a frangible closure (40) and an igniter assembly (20). The igniter assembly (20) has an igniter housing (22), a squib (60) electrically actuated and fitted in an end of the igniter housing (22) and a retractable piston (50) affixed to the igniter housing (22). Upon actuation of the squib (60), the retractable piston (50) propels forward breaking the frangible closure (40) releasing gases pushing the piston (50) retractably back into or over the igniter housing (22) as the pressurized gas releases out of the diffuser (30).

An inflator includes an inflator body that produces an inflation gas by burning a gas generating agent and a sensor that is mounted on the inflator body and is capable of detecting a degradation of the gas generating agent. The sensor is preferably composed of at least either one of a gas sensor, a pressure sensor, or a temperature sensor.

An inflator includes an inflator body that produces an inflation gas by burning a gas generating agent and a sensor that is mounted on the inflator body and is capable of detecting a degradation of the gas generating agent. The sensor is preferably composed of at least either one of a gas sensor, a pressure sensor, or a temperature sensor.

An inflator (10) is actuatable to provide inflation fluid for inflating an inflatable vehicle occupant protection device. The inflator (10) includes a volume of stored gas and a propellant (52) that is ignitable to undergo a reaction that produces reaction products. The reaction products include heat and gas that mix with the stored gas to produce a mixture of inflation fluid. The inflator (10) is configured to discharge the inflation fluid to inflate the protection device. The propellant (52) comprises an open cell foam fuel propellant (140). The reaction includes a combustion reaction in which the foam fuel propellant (140) reacts with a gas oxidizer comprising oxygen to produce heat and gas reaction products that mix with the stored gas.