Patent ID: 7185588

Claim:
In an inflator device including: a housing defining a storage chamber; a supply of gas generant material disposed within the storage chamber; and an initiator assembly joined to the housing and including an initiator in actuating communication with the supply of gas generant material, the Improvement comprising: a non-planar moisture barrier member disposed between the initiator assembly and the supply of gas generant material, wherein the moisture barrier member prevents moisture transmission from the initiator assembly to the supply of gas generant material, and wherein upon actuation of the initiator the moisture barrier member ruptures; the moisture barrier including a first surface facing the initiator assembly, an opposed second surface facing the supply of gas generant material and an outer edge, and wherein the moisture barrier member additionally includes a sleeve portion extending from the moisture barrier member outer edge; the moisture barrier including a base portion and a cup portion and wherein the non-planar moisture barrier member is disposed adjacent the initiator assembly with the cup portion in covering relation with at least a portion of the initiator, wherein the cup portion comprises a side wall and an end wall, the moisture barrier member base portion has a first thickness and the cup portion end wall has a second thickness, and the second thickness is less than the first thickness.