초록 ▼

An augment inflator (10) includes a rupture disk (140) covering an annular outlet opening (133) in a housing (40). A piston (150) is welded in the housing (40). Upon actuation of the inflator (10), gas generating material (220) ignites in a combustion chamber (158) in the piston (150). The pressure

An augment inflator (10) includes a rupture disk (140) covering an annular outlet opening (133) in a housing (40). A piston (150) is welded in the housing (40). Upon actuation of the inflator (10), gas generating material (220) ignites in a combustion chamber (158) in the piston (150). The pressure increases in the combustion chamber (158) until a stress riser (190) on the piston (150) ruptures. A severed portion of the piston (150) moves and a circular cutting edge (182) on the piston shears a circular opening in the rupture disk (140).

대표청구항 ▼

An apparatus for inflating an inflatable vehicle occupant restraint, said apparatus comprising: a housing comprising a center member and a shell member defining a stored gas chamber containing gas for inflating the inflatable vehicle occupant restraint, means for defining an outlet opening through w

An apparatus for inflating an inflatable vehicle occupant restraint, said apparatus comprising: a housing comprising a center member and a shell member defining a stored gas chamber containing gas for inflating the inflatable vehicle occupant restraint, means for defining an outlet opening through which gas can flow from said stored gas chamber, and a closure member on said housing for closing said outlet opening; a piston movable in said housing for opening said closure member; and an igniter connected with said housing for, upon actuation, moving said piston to open said closure member; said center member of said housing including a cylindrical side wall extending around an axis of said apparatus, said cylindrical side wall having first and second axial end portions; said center member of said housing including an end wall that includes said means for defining an outlet opening and having a flange portion extending radially outward from said cylindrical side wall; said shell member of said housing including an annular side wall which encircles said cylindrical side wall of said center member, said annular side wall of said shell member having a first wall portion welded to said flange portion of said center member at an annular first weld location, said annular side wall having a second wall portion welded to said second end portion of said center member at an annular second weld location spaced axially from said first weld location; said piston having a first axial end portion with a cutting edge for opening said closure member and a second axial end portion welded at said second weld location to said shell member and to said center member.