Claims
- 1. An airbag device having an inflator comprising:
a propellant; an igniter for igniting the propellant; a combustion chamber in which the propellant is burned; a filter chamber in which a filter is positioned; a partition separating said combustion chamber and said filter chamber; communication orifices formed in said partition for allowing communication between said combustion chamber and said filter chamber; gas ports for supplying inflating gas into an airbag; and a closing mechanism configured to maintain said communication orifices closed until the pressure of said combustion chamber reaches a predetermined pressure.
- 2. The device of claim 1, wherein said closing mechanism includes breakable members adapted to break at the predetermined pressure.
- 3. The device of claim 1, wherein said closing mechanism is adapted to open when the pressure of the combustion chamber is slightly lower than a maximum combustion pressure of the propellant in the combustion chamber.
- 4. The device of claim 3, wherein said closing mechanism is adapted to open when said pressure of the combustion chamber reaches approximately a lower limit of a variation range of a maximum combustion pressure.
- 5. An airbag device having an inflator comprising:
a propellant; an igniter for igniting the propellant; a combustion chamber in which the propellant is burned; a filter chamber in which a filter is positioned; a partition separating said combustion chamber and said filter chamber; communication orifices formed in said partition for allowing communication between said combustion chamber and said filter chamber; gas ports for supplying inflating gas into an airbag, wherein said gas ports are formed in an outer periphery of the inflator, away from said combustion chamber.
- 6. The device of claim 1, further comprising an airbag connected to the inflator.
- 7. The device of claim 6, wherein said airbag has an gas inlet facing to the gas ports of said inflator.
- 8. The device of claim 5, further comprising an airbag connected to the inflator.
- 9. An airbag device having an elongated inflator comprising:
a propellant; an igniter for igniting the propellant; a combustion chamber in which the propellant is burned; a filter chamber in which a filter is positioned; a partition separating said combustion chamber and said filter chamber; communication orifices formed in said partition for allowing communication between said combustion chamber and said filter chamber, wherein said combustion chamber and said filter chamber are arranged in parallel in the longitudinal direction of the inflator with said partition being interposed therebetween; and gas ports for supplying inflating gas into an airbag.
- 10. The device of claim 9, further comprising an airbag connected to the inflator.
- 11. The device of claim 9, wherein said filter chamber includes projecting portions on both ends thereof in the longitudinal direction so that said filter chamber is longer than said combustion chamber, and wherein connecting portions are formed on the ends of said projecting portions for connecting to the airbag.
- 12. The airbag device of claim 11 further comprising an airbag connected to the connecting portions of the inflator.
- 13. The device of claim 9, wherein said filter chamber and said combustion chamber are arranged to be offset from each other in the longitudinal direction with the partition being interposed therebetween so that said filter chamber and said combustion chamber project in the opposite directions to each other, and wherein the inflator further comprises a connecting portion formed on the end of the projecting portion of said filter chamber.
- 14. The device of claim 13, further comprising an airbag connected to the connecting portion of the inflator.
- 15. An airbag device having an inflator comprising:
a propellant; an igniter for igniting the propellant; a combustion chamber in which the propellant is burned; a filter chamber in which a filter is positioned, wherein said filter is disk shaped and has one surface of said filter arranged adjacent to said partition; a partition separating said combustion chamber and said filter chamber; communication orifices formed in said partition for allowing communication between said combustion chamber and said filter chamber; and gas ports for supplying inflating gas into an airbag.
- 16. The airbag device of claim 15 further comprising an airbag connected to the inflator.
- 17. An airbag device having an inflator comprising:
a propellant; an igniter for igniting the propellant; a combustion chamber in which the propellant is burned; a filter chamber in which a filter is positioned, wherein said filter has a hollow cylindrical configuration and said combustion chamber is formed in the hollow portion of said filter; a partition separating said combustion chamber and said filter chamber; communication orifices formed in said partition for allowing communication between said combustion chamber and said filter chamber; and gas ports for supplying inflating gas into an airbag.
- 18. The device of claim 17, further comprising an airbag connected to the inflator.
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] The present application claims priority to and the benefit of U.S. Provisional Patent Application Ser. No. 60/197,771 filed Apr. 14, 2000. The foregoing provisional application is incorporated by reference herein in its entirety.
Provisional Applications (1)
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Number |
Date |
Country |
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60197771 |
Apr 2000 |
US |