Gas generator

• US 20040061319A1
• Filed: 06/26/2003
• Published: 04/01/2004
• Est. Priority Date: 12/26/2000
• Status: Abandoned Application

• Current Assignee: Nippon Kayaku Company Limited
• Original Assignee: Nippon Kayaku Company Limited
• Inventors: Saso, Takashi, Hisada, Manabu, Tanaka, Koji, Nishimura, Tsuyokazu
• Application Number:
  US10/450,839
• Publication Number:
  US 20040061319A1
• Time in Patent Office: Days
• US Class Current: 280/741
• CPC Class Codes: B60R 2021/2633 with a plurality of inflation levels
• CPC Class Codes: B60R 2021/2648 comprising a plurality of combustion chambers or sub-chambers
• CPC Class Codes: B60R 21/2644 using only solid reacting substances, e.g. pellets, powder

Abstract

In a gas generator comprising a cylindrical housing 1, gas generants 16 for generating gas by burning, which are charged in a plurality of combustion chambers 41 and 42 divided within the housing 1 and provided with orifices, and a plurality of ignitor devices 4 and 5 for burning the gas generants 16 within the respective combustion chambers 41 and 42 by spouting flame into the respective combustion chambers 41 and 42, wherein the ignitor devices 4 and 5 are arranged at each eccentric position from an axis of the housing 1, an enclosed space A for staying the generated gas discharged from the respective orifices 12 and 13 is formed at an outlet portion of the respective orifices 12 and 13 in the combustion chambers 41 and 42 having the ignitor devices arranged at the eccentric positions, and after passing through the enclosed space A, the gas is discharged from a gas discharge hole 14 formed in the housing 1.

Claims

1. (amended) a gas generator comprising:

a cylindrical housing;

gas generants for generating gas by burning, which are charged in a plurality of combustion chambers divided within the housing and provided with orifices; and

a plurality of ignitor devices for burning the gas generants within the respective combustion chambers by spouting flame into the respective combustion chambers,

wherein at least one of the ignitor devices is arranged at an eccentric position from an axis of the housing,

a cooling/filtering member is provided on an inner peripheral side of the orifices and a space for dispersing the generated gas is formed between the cooling/filtering member and the orifices, and

an enclosed space for staying the generated gas discharged from the respective orifices is formed at an outlet portion of the orifices in the combustion chamber having the ignitor devices arranged at the eccentric position, and after passing through the enclosed space, the gas is discharged from a gas discharge hole formed in the housing.

4. The gas generator, according to claim 1, comprising restraining member for restraining the gas generated in one combustion chamber from entering into the other combustion chamber.

6. The gas generator, according to claim 1, wherein

the gas discharge hole is formed so as to uniformly discharge gas in a direction at right angles to the axis of the housing and in a circumferential direction and aperture area of the gas discharge hole is larger than the sum of the aperture areas of the respective orifices.

7. The gas generator, according to claim 1, wherein

a seal is attached to at least one of the orifices.

8. The gas generator, according to claim 1, wherein

a seal is attached to the gas discharge hole.

2. (delete)

3. (delete)

5. (delete)

9. (added) A gas generator comprising:

a cylindrical housing;

gas generants for generating gas by burning, which are charged in a plurality of combustion chambers divided within the housing and provided with orifices; and

a plurality of ignitor devices for burning the gas generants within the respective combustion chambers by spouting flame into the respective combustion chambers,

wherein at least one of the ignitor devices is arranged at an eccentric position from an axis of the housing,

an enclosed space for staying the generated gas discharged from the respective orifices is formed at an outlet portion of the orifices in the combustion chamber having the ignitor devices arranged at the eccentric position, and after passing through the enclosed space, the gas is discharged from a gas discharge hole formed in the housing, and

the gas discharge hole is formed so as to uniformly discharge gas in a direction at right angles to the axis of the housing and in a circumferential direction and aperture area of the gas discharge hole is larger than the sum of aperture areas of the respective orifices.

10. (added) The gas generator, according to claim 9, wherein

a cooling/filtering member is provided on an outer peripheral side of the orifices.

11. (added) The gas generator, according to claim 10, wherein

the cooling/filtering member is positioned so as to separate the enclosed space into the respective enclosed spaces communicating to the respective orifices.

12. (added) The gas generator, according to claim 9, comprising

restraining member for restraining the gas generated in one combustion chamber from entering into the other combustion chamber.

13. (added) The gas generator, according to claim 9, wherein

a seal is attached to at least one of the orifices.

14. (added) The gas generator, according to claim 9, wherein

a seal is attached to the gas discharge hole.