Side curtain airbag
First Claim
1. An inflatable cushion for a side of a vehicle, the inflatable cushion, comprising:
- a first cushion section formed from a first material, the first cushion section having a plurality of separate substantially isolated inflatable cells each of which having only an inlet opening for receipt of an inflation gas;
an internal passageway formed in the first cushion section, the internal passageway linking and fluidly coupling to each of the plurality of separate substantially isolated inflatable cells via the inlet opening of each of the plurality of separate substantially isolated inflatable cells;
a diffuser member disposed in the internal passageway, the diffuser member being configured to supply the inflation gas to each of the plurality of separate substantially isolated inflatable cells, wherein the diffuser member consists essentially of a non-rigid fabric member formed from a permeable material, the non-rigid fabric member is independent of the first material used to form the first cushion section and the permeable material of the non-rigid fabric member is the main source of fluid flow into each inlet opening of each of the plurality of separate substantially isolated inflatable cells such that the inflation gas must pass through the permeable material of the diffuser member in order to inflate each of the plurality of separate substantially isolated inflatable cells; and
means for restricting fluid flow between each of the plurality of separate substantially isolated inflatable cells by limiting fluid flow between an exterior portion of the diffuser member and an interior surface of the internal passageway proximate to an edge of the inlet openings of the plurality of separate substantially isolated inflatable cells such that a predetermined effective flow area is provided between a loaded cell of anyone of the plurality of separate substantially isolated inflatable cells and the remaining plurality of separate substantially isolated inflatable cells, wherein the effective flow area causes an inflated cell of one of the plurality of separate substantially isolated inflatable cells to have an increased internal pressure when it is impacted by an object and wherein the increased internal pressure will prevent the object from striking through the cell with the increased internal pressure and wherein the inflated cell has an internal pressure greater than 20 kilopascals and less than 40 kilopascals prior to its impact by the object.
3 Assignments
0 Petitions
Accused Products
Abstract
An inflatable cushion for a side of a vehicle is disclosed herein, the inflatable cushion having: a first cushion section formed from a first material, the first cushion section having a plurality of separate inflatable cells each of which having an inlet opening for receipt of an inflation gas; an internal passageway formed in the first cushion section, the internal passageway linking and fluidly coupling to each of the plurality of separate inflatable cells via the inlet opening of each of the plurality of separate inflatable cells; a diffuser member disposed in the internal passageway, the diffuser member being configured to supply the inflation gas to each of the plurality of separate inflatable cells, wherein the diffuser member consists essentially of a non-rigid fabric member formed from a permeable material, the non-rigid fabric member is independent of the first material used to form the first cushion section and the permeable material of the non-rigid fabric member is the main source of fluid flow into each inlet opening of each of the plurality of separate inflatable cells such that the inflation gas must pass through the permeable material; and means for restricting fluid flow between the plurality of inflatable cells by limiting fluid flow between an exterior portion of the diffuser member and an interior surface of the internal passageway proximate to an edge of the inlet openings of the plurality of inflatable cells.
57 Citations
25 Claims
-
1. An inflatable cushion for a side of a vehicle, the inflatable cushion, comprising:
-
a first cushion section formed from a first material, the first cushion section having a plurality of separate substantially isolated inflatable cells each of which having only an inlet opening for receipt of an inflation gas; an internal passageway formed in the first cushion section, the internal passageway linking and fluidly coupling to each of the plurality of separate substantially isolated inflatable cells via the inlet opening of each of the plurality of separate substantially isolated inflatable cells; a diffuser member disposed in the internal passageway, the diffuser member being configured to supply the inflation gas to each of the plurality of separate substantially isolated inflatable cells, wherein the diffuser member consists essentially of a non-rigid fabric member formed from a permeable material, the non-rigid fabric member is independent of the first material used to form the first cushion section and the permeable material of the non-rigid fabric member is the main source of fluid flow into each inlet opening of each of the plurality of separate substantially isolated inflatable cells such that the inflation gas must pass through the permeable material of the diffuser member in order to inflate each of the plurality of separate substantially isolated inflatable cells; and means for restricting fluid flow between each of the plurality of separate substantially isolated inflatable cells by limiting fluid flow between an exterior portion of the diffuser member and an interior surface of the internal passageway proximate to an edge of the inlet openings of the plurality of separate substantially isolated inflatable cells such that a predetermined effective flow area is provided between a loaded cell of anyone of the plurality of separate substantially isolated inflatable cells and the remaining plurality of separate substantially isolated inflatable cells, wherein the effective flow area causes an inflated cell of one of the plurality of separate substantially isolated inflatable cells to have an increased internal pressure when it is impacted by an object and wherein the increased internal pressure will prevent the object from striking through the cell with the increased internal pressure and wherein the inflated cell has an internal pressure greater than 20 kilopascals and less than 40 kilopascals prior to its impact by the object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. An inflatable cushion for a side of a vehicle, the inflatable cushion, comprising:
-
a first cushion section formed from a first material, the first cushion section having a plurality of separate substantially isolated inflatable cells each of which having only an inlet opening for receipt of an inflation gas; an internal passageway formed in the first cushion section, the internal passageway linking and fluidly coupling to each of the plurality of separate substantially isolated inflatable cells via the inlet opening of each of the plurality of separate substantially isolated inflatable cells; a diffuser member disposed in the internal passageway, the diffuser member being configured to supply the inflation gas to each of the plurality of separate substantially isolated inflatable cells, wherein the diffuser member consists essentially of a non-rigid fabric member formed from a permeable material, the non-rigid fabric member is independent of the first material used to form the first cushion section and the permeable material of the non-rigid fabric member is the main source of fluid flow into each inlet opening of each of the plurality of separate substantially isolated inflatable cells such that the inflation gas must pass through the permeable material of the diffuser member; and means for restricting fluid flow between the plurality of inflatable cells by limiting fluid flow between an exterior portion of the diffuser member and an interior surface of the internal passageway proximate to an edge of the inlet openings of the plurality of separate substantially isolated inflatable cells, wherein the means for restricting fluid flow between an exterior portion of the diffuser member and an interior surface of the internal passageway proximate to an edge of the inlet opening of the plurality of separate substantially isolated inflatable cells is a plurality of stitches independently and discretely applied through the first material of the first cushion section, and wherein only a portion of the plurality of stitches secures a plurality of fabric portions to an exterior surface of the first cushion section and wherein the effective flow area causes an inflated cell of one of the plurality of inflatable cells to have an increased internal pressure when it is impacted by an object and wherein the increased internal pressure will prevent the object from striking through the cell with the increased internal pressure and wherein the inflated cell has an internal pressure less than 60 kilopascals prior to its impact by the object. - View Dependent Claims (18, 19, 20, 21)
-
-
22. An airbag module for a vehicle, comprising:
-
a side curtain inflatable cushion comprising; a first cushion section formed from a first material, the first cushion section having a plurality of separate substantially isolated inflatable cells each of which only having an inlet opening for receipt of an inflation gas; an internal passageway formed in the first cushion section, the internal passageway linking and fluidly coupling to each of the plurality of separate substantially isolated inflatable cells via the inlet opening of each of the plurality of separate substantially isolated inflatable cells; a diffuser member disposed in the internal passageway, the diffuser member being configured to supply the inflation gas to each of the plurality of separate substantially isolated inflatable cells, wherein the diffuser member consists essentially of a non-rigid fabric member formed from a permeable material, the non-rigid fabric member is independent of the first material used to form the first cushion section and the permeable material of the non-rigid fabric member is the main source of fluid flow into each of the plurality of separate substantially isolated inflatable cells such that the inflation gas must pass through the permeable material; and means for restricting fluid flow between each of the plurality of inflatable cells by limiting fluid flow between an exterior portion of the diffuser member and an interior surface of the internal passageway proximate to an edge of an inlet opening of each of the plurality of inflatable cells such that a predetermined effective flow area is provided between a loaded cell of anyone of the plurality of inflatable cells and the remaining plurality of inflatable cells; and an inflator for providing the inflation gas, the inflator being fluidly coupled to the diffuser member and wherein the effective flow area causes an inflated cell of one of the plurality of separate substantially isolated inflatable cells to have an increased internal pressure when it is impacted by an object and wherein the increased internal pressure will prevent the object from striking through the cell with the increased internal pressure and wherein the inflated cell has an internal pressure less than 60 kilopascals prior to its impact by the object.
-
-
23. A method of inflating an inflatable cushion, the method comprising:
-
controlling the flow rate of an inflation gas into the inflatable cushion by limiting an amount of surface area between an exterior surface of a non-rigid fabric diffuser member and an interior surface of an internal passageway formed in the inflatable cushion section, the internal passageway linking and fluidly coupling to each of a plurality of separate inflatable cells only via an inlet opening of each of the plurality of separate inflatable cells, the inflatable cushion being formed from a first material and the diffuser member consists essentially of a non-rigid fabric member formed from a permeable material, the non-rigid fabric member is independent of the first material used to form the inflatable cushion and the permeable material of the non-rigid fabric member is the main source of fluid flow into the inlet openings of the plurality of separate inflatable cells such that the inflation gas must pass through the permeable material, wherein the amount of surface area between the exterior surface of the non-rigid fabric diffuser member and the interior surface of the internal passageway proximate to the inlet opening of each of the plurality of separate inflatable cells is limited by applying a plurality of stitches through a first wall member and a second wall member of the inflatable cushion in order to secure the first wall member to the second wall member; and restricting fluid flow between each of the plurality of separate inflatable cells by limiting fluid flow between the exterior surface of the non-rigid fabric diffuser member and the interior surface of the internal passageway proximate to an edge of the inlet opening of each of the plurality of separate inflatable cells such that a predetermined effective flow area is provided between a loaded cell of anyone of the plurality of separate inflatable cells and the remaining plurality of separate inflatable cells and wherein the effective flow area causes an inflated cell of one of the plurality of inflatable cells to have an increased internal pressure when it is impacted by an object and wherein the increased internal pressure will prevent the object from striking through the cell with the increased internal pressure and wherein the inflated cell has an internal pressure less than 60 kilopascals prior to its impact by the object. - View Dependent Claims (24, 25)
-
Specification