Abstract: Variable deployment performance by controlling the quantity and fluid flow path of the inflator gas into or out of an air bag module according to the present invention. The air bag module includes a vent opening and a cushion retainer diffuser including a plurality of diffuser openings which permits fluid communication between an annular cavity and an air bag cushion. The vent opening provides a fluid path for the inflator gas to flow from the annular cavity to outside of the air bag module. For full level deployment, the vent opening is closed and therefore the inflator gas is not permitted to flow away from the air bag module but instead flows into the air bag cushion. For low level deployment, the volume of inflator gas which flows into the air bag cushion is controlled by selecting the ratio between the cross-sectional area of the diffuser openings and the cross-sectional area of the vent opening.

Abstract: This present invention provides variable deployment performance by controlling the quantity and fluid flow path of the inflator gas into or out of an air bag module according to the present invention. The air bag module includes a vent opening and a cushion retainer diffuser including a plurality of diffuser openings which permits fluid communication between an annular cavity and an air bag cushion. The vent opening provides a fluid path for the inflator gas to flow from the annular cavity to outside of the air bag module. For full level deployment, the vent opening is closed and therefore the inflator gas is not permitted to flow away from the air bag module but instead flows into the air bag cushion. For low level deployment, the volume of inflator gas which flows into the air bag cushion is controlled by selecting the ratio between the cross-sectional area of the diffuser openings and the cross-sectional area of the vent opening.

Abstract: An air bag module is provided for inflating an air bag cushion at variable rates in response to rapid deceleration of a motor vehicle. The air bag module includes an inflator for generating inflator gas to inflate an air bag cushion upon the sensing rapid deceleration of a vehicle. An annular cushion retainer is disposed about the inflator for directing gases from the inflator to the air bag cushion. The cushion retainer includes an annular cavity in fluid communication with the air bag cushion by a vent opening to selectively direct gas away from the air bag cushion during a reduced level of deployment. A controller generates an ignition signal to the inflator in response to velocity responsive sensors. In response to the ignition signals, the inflator releases an appropriate predetermined volume of gas into the air bag cushion.

Abstract: An air bag module includes an inflator and an air bag for inflation. The air bag includes retainer bars for attachment of the air bag to the housing. The module further includes an axially elongated, open-ended, generally cylindrical extruded housing having a circular-shaped cross section defined by a single cylindrical wall having an internal wall surface and an external wall surface. The housing includes integrally extruded air bag channels directly disposed on the external wall surface. The integrally extruded air bag channels axially receive the retainer bars of the air bag therein for attachment of the air bag to the housing such that the cylindrical wall and the air bag channels form a generally cylindrical-shaped housing which is lightweight and compact. Preferably, the module includes exactly two integrally formed channels directly disposed on the housing and a cover having axially extending enlarged portions thereon.

Abstract: An air bag assembly includes an inflator for discharging inflator gas. The inflator includes upper and lower longitudinal ends and an elongated longitudinal inflator axis. The inflator has a longitudinally elongated solid body portion and also has an outlet end portion located at the upper longitudinal end of the inflator atop the elongated solid body portion. The outlet end portion includes a plurality of discharge ports through which inflator gas is discharged. A base plate is connected to the inflator and extends radially outward therefrom. The base plate is positioned closer to the upper longitudinal end of the inflator than to the lower longitudinal end. The longitudinal inflator axis is generally perpendicular to the base plate to advantageously provide a T-shaped. An air bag is positioned above the base plate for deployment in an upwardly direction away from the base plate.

Abstract: An air bag module in a vehicle includes a housing and an inflatable air bag having a mouth portion defining an air bag opening, the mouth portion including opposing axially extending side edges. The module further includes an air bag retainer for securing the air bag to the housing. The retainer includes a pair of axially elongated retainer bars each including an axially elongated main body portion and an axially elongated thin tail portion extending radially outward from the main body portion. The side edges of the air bag are each secured to a respective thin tail portion of the retainer bars such that movement of the air bag relative the retainer bars is prevented during assembly and during air bag inflation.

Abstract: An air bag assembly includes an axially elongated inflator for generating gas. The inflator includes first and second ends and has a gas discharge opening located on the first inflator end. The air bag assembly also includes an air bag deployable upon generation of gas by the inflator. A diffuser cup engages the first inflator end on which the gas discharge opening is located. The diffuser cup diffuses the inflator gas into the air bag such that the inflator gas is spread more evenly into the air bag during air bag inflation. Preferably, the diffuser cup also retains the first inflator end to an end wall of a housing.

Abstract: An air bag module includes an axially elongated, extruded housing having a nautilus-shaped profile defined by a single continuously extending spiral-shaped wall. The spiral-shaped wall has first and second free ends and the spiral-shaped wall has a generally continually increasing radius of curvature from the first end to the second end. The housing preferably has a decreased radius portion for holding an inflator therein and an increased radius portion for holding an air bag therein. The decreased radius portion has a radius of curvature which is less than a radius of curvature of the increased radius portion.