Dual chamber airbag
First Claim
1. An airbag comprising an upper fabric ply, a lower fabric ply and a middle ply, the plies having a circumferential region and being connected to one another along their circumferential regions, the middle ply extending between the upper fabric ply and the lower fabric ply essentially parallel to these and being firmly connected to the upper fabric ply and the lower fabric ply with a direct close fit only along its circumference, the lower fabric ply having a gas inlet port, and the middle ply having a means by which gas can then flow therethrough including at least one overflow port formed in the middle ply, wherein said overflow port is covered at least partially, on that side of the middle ply which faces the upper fabric ply by a fabric portion which extends parallel to the middle ply and which, at least in a part of a circumferential region of the fabric portion, defines a flow path for a gas parallel to the middle ply.
5 Assignments
0 Petitions
Accused Products
Abstract
An airbag for an airbag module in a vehicle has an upper fabric ply, a lower fabric ply and a middle ply which are connected to one another along their circumferential regions. The middle ply extends between the upper fabric ply and the lower fabric ply essentially parallel to these and is firmly connected to the upper fabric ply and the lower fabric ply with a direct close fit only along its circumference. The lower fabric ply has a gas inlet port and the middle ply has a gas passage.
128 Citations
15 Claims
- 1. An airbag comprising an upper fabric ply, a lower fabric ply and a middle ply, the plies having a circumferential region and being connected to one another along their circumferential regions, the middle ply extending between the upper fabric ply and the lower fabric ply essentially parallel to these and being firmly connected to the upper fabric ply and the lower fabric ply with a direct close fit only along its circumference, the lower fabric ply having a gas inlet port, and the middle ply having a means by which gas can then flow therethrough including at least one overflow port formed in the middle ply, wherein said overflow port is covered at least partially, on that side of the middle ply which faces the upper fabric ply by a fabric portion which extends parallel to the middle ply and which, at least in a part of a circumferential region of the fabric portion, defines a flow path for a gas parallel to the middle ply.
- 14. An airbag comprising an upper fabric ply, a lower fabric ply and a middle ply, which have a circumferential region and are connected to one another along their circumferential regions, the middle ply extending between the upper fabric ply and the lower fabric ply essentially parallel to these and being firmly connected to the upper fabric ply and the lower fabric ply with a direct close fit only along its circumference, the lower fabric ply having a gas inlet port, and the middle ply having a means by which gas can then flow there through including at least one overflow port formed in the middle ply, wherein said overflow port is at least partially closed when the middle ply presses the upper ply against a vehicle occupant, further comprising a fabric portion connected to the middle ply facing the upper ply, the fabric portion extending parallel to the middle ply wherein the fabric portion and the middle ply define a flow path for a gas parallel to the middle ply.
Specification