Igniter case
AssigneeAutoliv Development AB
InventorsPatrice BOUTIN, Jose REINOSO
Life of this patent
Estimating the term…
Abstract
A metallic case for a pyrotechnical igniter of a gas generator for a vehicle safety device that includes a peripheral side wall, a closed end, and a weak zone in the peripheral side wall. The weak zone extends along a continuous trace having a first end portion, a second end portion, and an intermediate portion between the first and second end portions. The first and second end portions of the continuous trace both transition from a first point having a first side wall depth to a second point having a second side wall depth. The second side wall depth is greater than the first side wall depth. The weak zone is configured for opening a vent in the peripheral side wall in response to an increase of pressure within the metallic case.
Claims20
A metallic case for a pyrotechnical igniter of a gas generator for a vehicle safety device, the metallic case comprising:
- a peripheral side wall;
- a closed end;
- and
- a weak zone in the peripheral side wall, the weak zone extending along a continuous trace having a first end portion, a second end portion, and an intermediate portion between the first and second end portions, the first and second end portions of the continuous trace both transitioning from a first point, having a first side wall depth, to a second point, having a second side wall depth, the second side wall depth being greater than the first side wall depth,
- wherein the weak zone is configured for opening a vent in the peripheral side wall in response to an increase of pressure within the metallic case.
A metallic case for a pyrotechnical igniter of a gas generator for a vehicle safety device, the metallic case comprising:
- a peripheral side wall having an axis;
- a closed end;
- and
- a weak zone in the peripheral side wall, the weak zone extending along a continuous trace having a first U-shaped portion, a second U-shaped portion, and a third U-shaped portion between the first and second U-shaped portions, the first and second U-shaped portions generally open in a first direction parallel to the axis and extend through approximately 180 degrees, the third U-shaped portion generally opens in a second direction parallel to the axis, the second direction being opposite the first direction,
- wherein the weak zone is configured for opening a vent in the peripheral side wall in response to an increase of pressure within the metallic case, such that the vent opens along the weak zone.
Dependencies are inferred from the claim text.