Reinforced ceramic air bag filters

Details Reinforced ceramic air bag filters Reinforced ceramic air bag filters

1996-01-16

1998-05-05

Smith, Duane S.

Gas separation

Combined or convertible

In motor vehicle

55487, 55523, 280740, 280742, 422167, B01D 3920

Patent

active

057467935

ABSTRACT:
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.

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