초록 ▼

Reinforced ceramic unitary filters for air bags. The filters have a first layer having a high porosity, and a second layer having a low porosity. The first layer is preferably formed of low-cost ceramic grit sintered into a rigid mass, or a rigid reticulated ceramic. The second layer is formed of me

Reinforced ceramic unitary filters for air bags. The filters have a first layer having a high porosity, and a second layer having a low porosity. The first layer is preferably formed of low-cost ceramic grit sintered into a rigid mass, or a rigid reticulated ceramic. The second layer is formed of metal particles, and provides increased strength for the brittle ceramic. The metal particles may be formed onto the second layer and then sintered in place. Alternatively, the second layer may be formed separately and secured in position on the first layer. As a third alternative, the second layer may be applied by plasma arc deposition upon the first layer. The metal particles provide increased strength to the filter, as well as providing a fine filtering layer. The metal layer can also place the ceramic in compression to pre-load the ceramic layer for increased resistance to breakage.

대표청구항 ▼

[ What is claimed is:] [1.] A unitary filter for use with an inflator, comprising:a monolithic, reticulated, porous body constructed and arranged for use as a filter for gasses produced by a pyrotechnic inflator, said body including:a first layer formed of a porous ceramic, and;a second layer formed

[ What is claimed is:] [1.] A unitary filter for use with an inflator, comprising:a monolithic, reticulated, porous body constructed and arranged for use as a filter for gasses produced by a pyrotechnic inflator, said body including:a first layer formed of a porous ceramic, and;a second layer formed of an agglomeration of metal particles secured to each other and to said first layer, said second layer reinforcing said first layer and providing additional filtration.