Controlled pressure relief of an inflatable restraint reaction canister
First Claim
1. In an inflatable restraint system reaction canister, the improvement comprising:
- a conventionally extruded one-piece canister structure body part wherefrom an air bag is deployable in a first direction, said body part having first and second opposite side walls spaced apart to form an air bag retaining cavity and a bridging portion joining said first and second opposite side walls wherein at least one of said bridging portion, first side wall and second side wall comprises a tear seam adapted to tear under the influence of a build-up of pressure thereagainst to provide venting of such pressure in a direction away from the first direction.
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Accused Products
Abstract
Featured for use as a part of a reaction canister of an inflatable restraint system is a conventionally extruded one-piece canister structure body part having first and second opposite side walls and a bridging portion joining the first and second opposite side walls. In the body part, at least one of the bridging portion, first side wall and second side wall includes a tear seam adapted to tear under the influence of a build-up of pressure thereagainst to provide venting of such pressure. As a result of alleviating concerns such as of material fragmentation when exposed to extreme heat conditions, e.g., a fire, the invention allows the more widespread use of light weight, temperature sensitive materials in reaction canister constructions.
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Citations
18 Claims
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1. In an inflatable restraint system reaction canister, the improvement comprising:
a conventionally extruded one-piece canister structure body part wherefrom an air bag is deployable in a first direction, said body part having first and second opposite side walls spaced apart to form an air bag retaining cavity and a bridging portion joining said first and second opposite side walls wherein at least one of said bridging portion, first side wall and second side wall comprises a tear seam adapted to tear under the influence of a build-up of pressure thereagainst to provide venting of such pressure in a direction away from the first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 16)
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12. In an inflatable restraint system reaction canister, the improvement comprising:
a conventionally extruded one-piece canister structure body part wherefrom an air bag is deployable in a first direction, said body part having first and second opposite side walls and a bridging portion joining said first and second opposite side walls wherein said bridging portion comprises a linear tear seam incorporated in said body part during the extrusion fabrication thereof, said tear seam adapted to tear under the influence of a build-up of pressure thereagainst of no more than about 100 psi to provide venting of such pressure in a direction away from the first direction. - View Dependent Claims (13, 14, 15, 17, 18)
Specification