초록 ▼

An improved method for the fabrication of filter assemblies for use in automotive air bag inflators by spirally winding a hollow cylindrical combustion screen comprised of layers of filter material. The spirally wound filter is then cut into individual units of desired length by the use of a convent

An improved method for the fabrication of filter assemblies for use in automotive air bag inflators by spirally winding a hollow cylindrical combustion screen comprised of layers of filter material. The spirally wound filter is then cut into individual units of desired length by the use of a conventional cutting device and additional filtering layers can optionally be added to form an inflator filter assembly.

대표청구항 ▼

[ What is claimed is:] [1.] An inflator assembly of a filter device and tubular gas generator, said gas generator comprising a filter device coaxially arranged within an outer perforated tube, sealing means for sealing each axial end of said outer tube, a gas-generating material contained within and

[ What is claimed is:] [1.] An inflator assembly of a filter device and tubular gas generator, said gas generator comprising a filter device coaxially arranged within an outer perforated tube, sealing means for sealing each axial end of said outer tube, a gas-generating material contained within and in contact with said filter device and means for igniting the gas generating material to generate pressurized gases, said filter device being arranged within said outer tube to filter the gases, retain the slag during combustion of said gas-generating material, and support the gas generating material during the expected lifetime of the inflator, said filter device comprising a filter element composed of multiple roll formed layers of filter material, said filter element being constructed in the form of a hollow cylindrical roll having a spirally wound inner core member and additional layers of filter material radially wrapped coextensively with the length of said inner core member.