Filter
AssigneeTRW Inc.
InventorsJohn P. O'Loughlin, Eldron L. Boehmer, Timothy A. Swann
Life of this patent
Estimating the term…
Abstract
A filter filters the gas generated by an air bag inflator. The gas comprises an alkali metal oxide. The inflator comprises a non-woven metal fibrous mat and small particles of a silicon compound, reactive with the alkali metal oxide, adhered to strands of the mat.
Claims17
A filter for filtering the exhaust gas of an air bag inflator, in which said exhaust gas comprises an alkali metal oxide, comprising:
- a fibrous mat comprising a plurality of strands defining a plurality of tortuous passageways for the flow of an exhaust gas comprising an alkali metal oxide;
- and
- a coating on said strands;
- said coating comprising particles of a silicon compound adhered to the strands of said mat, said silicon compound being reactive with an alkali metal oxide to form particles of an alkali metal silicate;
- said coating being present in an effective amount to constrict said passageways to small enough diameters to entrap said particles of alkali metal silicate.
A filter for filtering the exhaust gas of an air bag inflator, in which said exhaust gas comprises an alkali metal oxide, comprising:
- a fibrous mat comprising a plurality of strands defining passageways for the flow of said exhaust gas;
- and
- a coating on said strands;
- said coating comprising particles of a silicon compound, reactive with an alkali metal oxide, adhered to the strands of said mat, and particles of metal sintered to the strands of the mat and to each other, said particles of silicon compound being interspersed with the particles of metal and adhered to the mat by said particles of metal.
A filter for filtering the exhaust gas of an air bag inflator, in which said exhaust gas comprises an alkali metal oxide, comprising:
- a fibrous metal mat comprising a plurality of strands;
- particles of a silicon compound, reactive with an alkali metal oxide, adhered to the strands of said mat;
- and
- particles of a metal sintered to the strands of the mat and to each other, said particles of a silicon compound being interspersed with the particles of a metal and adhered to the strands by said particles of a metal.
A filter for filtering the exhaust gas of an air bag inflator, in which said exhaust gas comprises an alkali metal oxide, comprising:
- a fibrous metal mat comprising a plurality of strands defining passageways for the flow of an exhaust gas;
- particles of a silicon compound, reactive with an alkali metal oxide, in said mat in an effective amount to react with an alkali metal oxide in said exhaust gas to form an alkali metal silicate;
- particles of a metal sintered to the strands of the mat and to each other, said particles of a silicon compound being interspersed with the particles of a metal, the amount of particles of a metal being an effective amount to adhere the particles of a silicon compound to said strands;
- both said effective amounts being effective to constrict the passageways of said fibrous mat.
Dependencies are inferred from the claim text.