Air bag inflator

Land vehicles – Wheeled – Attachment

Patent

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Details

222 5, 137 682, B60R 2126

Patent

active

052421945

ABSTRACT:
An inflator comprises a source of gas for inflating on inflatable vehicle occupant restraint, such as an air bag. The air bag, when inflated, restrains an occupant of a vehicle during a collision. A burst disk is located to block gas flow into the air bag. A piston is movable from a retracted position to an extended position to rupture the burst disk. The piston includes (i) a first central portion for puncturing the burst disk and (ii) a second portion for cutting out a portion of the burst disk after the first central portion punctures the burst disk. After the second portion of the piston cuts out a portion of the burst disk, the cut out portion of the burst disk is clamped between the piston and a housing part of the inflator.

REFERENCES:
patent: 3773353 (1973-11-01), Trowbridge et al.
patent: 3774807 (1973-11-01), Keathley et al.
patent: 3966226 (1976-06-01), Roth
patent: 3968980 (1976-07-01), Hay
patent: 5131680 (1992-07-01), Coultas et al.
patent: 5152550 (1992-10-01), Hoagland et al.

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