Gas inflator structures, cooling filters therefor and methods of making such filters.

摘要

A cooling filter (30) for a chemical air bag inflator (44) is made by crimping smooth wire into a squiggle pattern, cutting the crimped wire into a plurality of segments, placing the segments in a molding having the form desired for the filter, and pressing the wire segments together in the mold. The filter is characterised by its ability to determine and control the operating pressure of the inflator, and enables the structuring of an inflator for lower pressure operation with less weight and reduced cost.