Abstract: An air bag system includes an inflatable air bag and a housing surrounding the air bag. The housing has first and second portions that are moveable away from each other upon inflation of the air bag. Furthermore, the first and second portions have first and second receptacles, respectively, that are engageable with first and second engaging members, respectively, of a cover material, for securing the cover material to the housing.

Abstract: A group of building blocks made from plastic to create area- or volume-shaped designs including cube-shaped basic elements connecting elements by which means a basic element is connected to another basic element. The connecting elements are cylinders with rounded collars which are forced into undercut recesses in the base elements. The base elements may be straight prisms or other polyhedral shapes. Several base elements may be formed in one piece. The connectors may be integral or separate and the connectors and base elements may have communicating bores.