Micro gas generator
First Claim
1. A gas generator comprising:
- an initiator including an initiator charge;
a gas generant composition spaced apart from the initiator; and
a fluid-impermeable blast director interposed between the initiator and the gas generant composition to provide a barrier between the gas generant composition and a blast resulting from ignition of the initiator charge when the initiator charge is ignited,the blast director opening in a first direction, and wherein there is no gas generant composition positioned in a path of a blast emanating from the blast director in the first direction.
1 Assignment
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Accused Products
Abstract
A gas generator (10) is provided, comprising an initiator (48) including an initiator charge, a gas generant insert (52) spaced apart from the initiator (48), and a fluid-impermeable blast director (42) interposed between the initiator (48) and the gas generant insert (52). The blast director (42) provides a barrier between the gas generant insert (52) and a blast resulting from ignition of the initiator charge when the initiator charge is ignited. The blast director (42), when used with particular gas generant configurations, reduces the effects of the initiator blast and reduces the amount of gas generant exposed to the blast, enabling the structural integrity of the gas generant (52) to be maintained.
36 Citations
8 Claims
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1. A gas generator comprising:
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an initiator including an initiator charge; a gas generant composition spaced apart from the initiator; and a fluid-impermeable blast director interposed between the initiator and the gas generant composition to provide a barrier between the gas generant composition and a blast resulting from ignition of the initiator charge when the initiator charge is ignited, the blast director opening in a first direction, and wherein there is no gas generant composition positioned in a path of a blast emanating from the blast director in the first direction. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A seatbelt device comprising:
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a seatbelt retractor comprising a spool; a seatbelt wound about said spool; and a seatbelt pretensioner including a gas generator, the gas generator including an initiator including an initiator charge, a gas generant composition spaced apart from the initiator, and a fluid-impermeable blast director interposed between the initiator and the gas generant composition to provide a barrier between the gas generant composition and a blast resulting from ignition of the initiator charge when the initiator charge is ignited, the blast director opening in a first direction, and wherein there is no gas generant composition positioned in a path of a blast emanating from the blast director in the first direction.
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8. A vehicle occupant restraint system comprising a gas generator including an initiator having an initiator charge, a gas generant composition spaced apart from the initiator, and a fluid-impermeable blast director interposed between the initiator and the gas generant composition to provide a barrier between the gas generant composition and a blast resulting from ignition of the initiator charge when the initiator charge is ignited, the blast director opening in a first direction, and wherein there is no gas generant composition positioned in a path of a blast emanating from the blast director in the first direction.
Specification