Patent ID: 6267408
Filing Date: 2001-07-31
Classification: B60R

Abstract:
An air-bag arrangement for use in a motor vehicle, the air-bag arrangement comprising:a gas generator,means to activate the gas generator in response to an accident occurring, andan air-bag to receive gas from the gas generator, the air-bag comprisingthree super-imposed fabric layers with outer peripheries conjoined, the three fabric layers including a lower layer, an intermediate layer, and an upper layer,a substantially centrally located aperture provided in the lower layer to receive a gas outlet of the gas generator,a plurality of apertures formed in the intermediate layer, andmeans interconnecting regions of the intermediate layer adjacent each of said plurality of apertures to the lower layer, wherein said interconnecting means partially surrounds each of said plurality of apertures, said interconnecting means being omitted in a region adjacent each of said plurality of apertures which is radially outwardly positioned relative to the center of the intermediate layer,the arrangement being adapted so that on actuation of the gas generator, initially gas is supplied to a region located substantially centrally of the air-bag between the intermediate layer and the lower layer in order to inflate that region, and subsequently is passed to a radially outer substantially annular region located between the intermediate layer and the lower layer to inflate that region and, during final stages of inflation of the bag, gas passes through the each of said plurality of apertures in the intermediate layer to inflate space between the intermediate layer and the upper layer.