Hybrid inflation system without pyrotechnic charge

Patent metadata

Field	Value
Publication number	US-9944244-B1
Application number	US-201715422845-A
Country	US
Kind code	B1
Filing date	Feb 2, 2017
Priority date	Feb 28, 2014
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

A gas generator includes a supply of stored gas containing carbon dioxide, and a magnesium supply or source, such as magnesium mesh, that is readily ignitable in the presence of carbon dioxide in the presence of heat.

First claim

What is claimed is:

1. A gas generator comprising:
a housing containing pressurized carbon dioxide; and
a porous container contained within said housing and said carbon dioxide and defining a chamber therein, said porous container comprising an ignitable magnesium source.

2. The gas generator of claim 1 , wherein said housing contains pressurized carbon dioxide and at least one other gas.

3. The gas generator of claim 1 , wherein said magnesium source and said carbon dioxide are in fluid communication prior to actuation of said gas generator.

4. The gas generator of claim 1 , further comprising:
an ignition assembly comprising an igniter and an ignition chamber proximate to said igniter,
wherein said magnesium source is stored within said ignition chamber prior to combustion thereof.

5. The gas generator of claim 1 , wherein said magnesium source is not contained within said carbon dioxide prior to ignition of said magnesium source.

6. The gas generator of claim 1 , wherein said porous container contains a gas generating composition.

7. The gas generator of claim 1 containing no gas generating composition.

8. The gas generator of claim 1 , wherein said porous container is formed from a material comprising magnesium.

9. A gas generator comprising:
a first container comprising pressurized carbon dioxide; and
an ignitable magnesium source contained within said first container,
wherein said magnesium source is in fluid communication with said carbon dioxide prior to actuation of said gas generator.

10. The gas generator of claim 9 , comprising a second container comprising said magnesium source.

11. The gas generator of claim 9 , comprising a second container contained within said first container, said second container comprising magnesium chips.

12. The gas generator of claim 10 further comprising a gas generating composition contained within said container.

13. The gas generator of claim 9 containing no gas generating composition.

14. A gas generator comprising,
a) a housing containing a compressed gas, and
b) an ignitable magnesium source,
wherein the compressed gas consists essentially of a gas selected from the group consisting essentially of carbon dioxide, and mixtures of carbon dioxide and inert gas.

15. The generator of claim 14 , containing no gas generating composition.

16. The gas generator of claim 14 , wherein the ignitable magnesium source is stored in an ignition assembly comprising an ignitor and an ignition chamber proximate to said ignitor.

17. The gas generator of claim 16 , wherein the ignition chamber comprises a rupturable, fluid-tight seal.

18. The gas generator of claim 14 , wherein the compressed gas and ignitable magnesium source are not in fluid communication prior to the actuation of the ignitor.

19. The generator of claim 14 , further comprising a gas generating composition.

20. The gas generator of claim 14 , wherein said magnesium source is in fluid communication with said carbon dioxide prior to actuation of said gas generator.

Assignees

• Tk Holdings Inc

Inventors

• Hordos Deborah L

Classifications

• B60R2021/01272

  Belt tensioners · CPC title

• C06D5/02

  by decompressing compressed, liquefied or solidified gases · CPC title

• F42B3/04

  for producing gas under pressure {(generators of inflation fluid especially adapted for vehicle air bags B60R21/26)} · CPC title

• B60R2021/01211

  Expansion of air bags · CPC title

• B60R21/0132 Primary

  responsive to vehicle motion parameters {, e.g. to vehicle longitudinal or transversal deceleration or speed value} · CPC title