Abstract: A cover (10) of integral construction for an air bag comprising: a panel (20) and a hinge (26) formed in a first side (28) of the cover (10) for enabling the panel to rotate thereabout after the panel separates from a seam on the opposite side of the panel in response to forces imparted thereto by an expanding air bag. The seam includes stress enhancing features for increasing stresses in the material causing same to tear and separate. These stress enhancing features includes a laterally extending narrow first portion (42), a closely spaced laterally extending narrow second portion (44) and a thin bridge (46) joining the first and second portions (42,44). The first portion, second portion and bridge are relatively movable one to the other so as to generate in the material at least two zones of increased tensile stress and at least two zones of increased compressive stress sufficient to cause the material to tear.

Abstract: A hollow, enclosed, seamless polymeric article. The article has an outer wall having an outside surface and an inside surface. There is at least one baffle within the article. There is a means to sealingly connect the baffle to the outer wall inside the article. The means to sealingly connect the baffle can sealingly connect the baffle to the inside surface of the outer wall or through the inner surface into the outer wall.