Initiator for a gas generator of a vehicle safety device
AssigneeAutoliv ASP, Inc.
InventorsMason Wayment, Matthew Erni
Life of this patent
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Abstract
An initiator for a gas generator of a vehicle safety device includes a cup defining an interior, a primary pyrotechnic material disposed in a primary combustion chamber in the interior of the cup, and a pair of electrical pins in reaction initiating communication with the primary pyrotechnic material through a bridge wire. The bridge wire is in reaction initiating contact with the primary pyrotechnic material at a first end of the primary pyrotechnic material. The primary pyrotechnic material is compacted within the primary combustion chamber to include a depression at a second end of the primary pyrotechnic material, the second end opposite the first end.
Claims17
An initiator for a gas generator of a vehicle safety device, the initiator comprising:
- a cup defining an interior;
- a primary pyrotechnic material disposed in a primary combustion chamber in the interior of the cup;
- and
- a pair of electrical pins in reaction initiating communication with the primary pyrotechnic material through a bridge wire, the bridge wire in reaction initiating contact with the primary pyrotechnic material at a first end of the primary pyrotechnic material,
- wherein the primary pyrotechnic material is compacted within the primary combustion chamber to include a depression at a second end of the primary pyrotechnic material, the second end opposite the first end,
- wherein the depression at the second end of the primary pyrotechnic material is radially spaced from a sidewall of the primary combustion chamber, and
- wherein the second end of the primary pyrotechnic material includes a toroidal shaped portion radially disposed between the depression and the sidewall of the primary combustion chamber.
An initiator for a gas generator of a vehicle safety device, the initiator comprising:
- a cup defining an interior;
- a primary combustion chamber within the interior of the cup;
- a primary pyrotechnic material disposed in a primary combustion chamber;
- and
- a pair of electrical pins in reaction initiating communication with the primary pyrotechnic material through a bridge wire, the bridge wire in reaction initiating contact with the primary pyrotechnic material at a first axial end of the primary pyrotechnic material,
- wherein the primary pyrotechnic material is axially compacted within the primary combustion chamber to include a depression at a second axial end of the primary pyrotechnic material, the second axial end opposite the first axial end,
- wherein the depression at the second axial end of the primary pyrotechnic material is radially spaced from a sidewall of the primary combustion chamber, and
- wherein the second axial end of the primary pyrotechnic material includes a toroidal shaped portion radially disposed between the depression and the sidewall of the primary combustion chamber.
An initiator for a gas generator of a vehicle safety device, the initiator comprising:
- a cup defining an interior;
- a primary combustion chamber including a primary pyrotechnic material;
- a secondary pyrotechnic material within the interior of the cup;
- and
- a pair of electrical pins in reaction initiating communication with the primary pyrotechnic material through a bridge wire, the bridge wire in reaction initiating contact with the primary pyrotechnic material at a first axial end of the primary pyrotechnic material,
- wherein the primary pyrotechnic material is compacted within the primary combustion chamber to include a depression at a second axial end of the primary pyrotechnic material, the second axial end opposite the first axial end,
- wherein combustion of the primary pyrotechnic material in turn actuates the secondary pyrotechnic material, and
- wherein the depression defines a concavity inwardly spaced from a sidewall of the primary combustion chamber.
Dependencies are inferred from the claim text.