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AssigneeBayern Chemie Gesellschaft fur Flugchemische Antrieb mit beschrankter Haftung
InventorsKarl E. Nilsson, Rudiger Lang, Wolfgang Buhl
Estimating the term…
In a gas generator for a vehicle protection system having an outer jacket and an inner housing attached thereto through an edge union and consisting of an ignition carrier and a thin-walled propellant vessel, which inner housing together with a primer and a propellant charge forms a hermetically encapsulated separate structural unit, an edge lip of the ignition carrier bent radially inward over the collar type enlarged propellant vessel edge is provided, which, when the inner housing is installed in the outer jacket, is pressed axially against a stepped abutment surface of the outer jacket and is thereby held in tight press-fit engagement on the collar-like vessel edge. Due to this the gas generator has, in terms of manufacture, a very simple construction in the region of the ignition carrier attachment to the propellant vessel but yet is highly burstproof.
A gas generator for a vehicle safety system, comprising a thick-walled tubular outer jacket defining a bore having an open end and at least a first stepped abutment surface, an annular ignition carrier secured against axial displacement in said outer jacket bore, said carrier having an edge lip engaged with said at least a first stepped abutment surface for fixing said carrier against axial movement in one direction of said outer jacket, said outer jacket having an edge union extending radially inwardly at said open end for retaining said carrier in said outer jacket against axial movement in an opposite direction, a primer connected to said carrier in said outer jacket bore and extending into a thin-walled propellant vessel which is also fastened to said ignition carrier and having an opening closed by said ignition carrier, said vessel containing propellant charge and having a vessel edge forming a collar engaged with said carrier adjacent said at least a first abutment surface of said outer jacket, said edge lip of said ignition carrier being engaged over said collar of said propellant vessel and being held in contact with said at least a first abutment surface of said outer jacket by said edge union, said ignition carrier including an annular groove for receiving said collar of said propellant vessel, said edge lip of said carrier forming a radially outer side wall of said annular groove.
A gas generator particularly for a vehicle safety system comprising:
A method of manufacturing a gas generator used particularly for a vehicle safety system which comprises an outer jacket defining a bore and having an open end and including an abutment surface in said bore, comprising filling a thin walled propellant vessel with a propellant charge, the vessel having an open end with an outwardly extending collar edge, connecting a pedestal primer to an ignition carrier which has an axially extending edge lip, engaging the collar edge of the propellant vessel in an annular groove disposed radially inwardly of the edge lip of the ignition carrier with the primer extending into the propellant vessel, deforming the edge lip radially inwardly and around the collar edge, inserting the combined ignition carrier with primer and propellant vessel into the bore of the outer jacket through the open end of the bore until the deformed edge lip of the ignition carrier engages against the abutment surface of the outer jacket bore, and deforming the outer jacket around the open end of the bore radially inwardly to press and hold the ignition carrier edge lip against the abutment surface.
Dependencies are inferred from the claim text.