Air bag inflator exit gas dispersion features

An air bag device comprising:

• (a) an air bag cushion having a gas inlet opening;
• (b) a diffuser canister having a plurality of walls configured to define an interior space therein, each of said plurality of walls having an interior surface, an exterior surface, and a wall thickness t, one of said plurality of walls having an aperture formed therethrough in direct communication with the interior of said air bag cushion, said aperture being defined by an edge extending between said interior surface and said exterior surface of said wall;
• (c) a gas generation inflator configured to rapidly create a gas within said diffuser canister, said gas exiting said diffuser canister through said aperture so as to fill said air bag cushion;
• and
• (d) dispersing means for diffusing said gas exiting said diffuser canister through said aperture, said dispersing means comprising an edge defining the perimeter of said aperture, said edge being configured such that a diameter of said aperture proximate to said exterior surface of said wall is larger than a diameter d1 of said aperture proximate to said interior surface of said wall.

An air bag device comprising:

• (a) an air bag cushion;
• (b) a diffuser canister having a plurality of walls configured to define an interior space therein, each of said plurality of walls having an interior surface and an exterior surface, one of said plurality of walls having at least one aperture formed therethrough in communication with the interior of said air bag cushion;
• (c) a gas generation inflator configured to rapidly create a gas within said diffuser canister, said gas exiting said diffuser canister through said aperture so as to fill said air bag cushion;
• and
• (d) means for causing turbulence in said gas exiting said diffuser canister through said aperture, said means comprising an edge defining said aperture.

An air bag device comprising:

• (a) an air bag cushion having a gas inlet opening;
• (b) a diffuser canister having a plurality of walls configured to define an interior space therein, each of said plurality of walls having an interior surface and an exterior surface;
• (c) a gas generation inflator configured to rapidly create a gas within said diffuser canister;
• and
• (d) an aperture formed through one of said plurality of walls, said aperture being in communication with the interior of said air bag cushion, said aperture having a non-smooth cross section configured to cause turbulence in said gas exiting said diffuser canister through said aperture.