Reaction canister with inflator output treatment fins

• US 5,779,265 A
• Filed: 10/16/1996
• Issued: 07/14/1998
• Est. Priority Date: 10/16/1996
• Status: Expired due to Fees

• Current Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Original Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Inventors: Rose, Larry D., Harris, Bradley D., Lauritzen, Donald R.
• Primary Examiner(s): Rice, Kenneth R.
• Application Number:
  US08/732,010
• Time in Patent Office: 636 Days
• Field of Search: 280/720.2, 280/736, 280/740, 280/741, 280/742
• US Class Current: 280/736
• CPC Class Codes: B60R 21/2171 specially adapted for elongated cylindrical or bottle-like inflators with a symmetry axis perpendicular to the main direction of bag deployment, e.g. extruded reaction canisters B60R21/2176 takes precedence
• CPC Class Codes: B60R 21/26 characterised by the inflation fluid source or means to control inflation fluid flow arrangement or mounting thereof to the vehicle B60R21/20; blasting cartridges for producing gas under pressure in general F42B3/04; initiators or igniters therefor F42B3/10
• CPC Class Codes: B60R 21/261 with means other than bag structure to diffuse or guide inflation fluid

Abstract

Featured for use as a part of an inflator-containing inflatable restraint system is a reaction canister in which the reaction canister body includes a plurality of inflator output treatment fins extending towards, without contacting, the associated inflator. Also, provided are corresponding processes for treating the gas output of a vehicular safety restraint inflator. In practice, such treatment of a contacting stream typically involves one or more of: cooling, redirection of flow, and removal or filtering of particulate therefrom.

Claims

1. In an inflatable restraint system including a reaction canister structure body having a portion wherein at least a section of an associated inflator is housed in spaced relation to avoid contact therebetween, the improvement comprising:

the inflator housing portion of the reaction canister body including a plurality of inflator output treatment fins extending towards, without contacting, the associated inflator.

2. The improvement of claim 1 wherein the reaction canister body is formed by conventional extrusion fabrication.

3. The improvement of claim 2 wherein the reaction canister body is formed by conventional extrusion fabrication of a light weight metal selected from the group of aluminum and magnesium.

4. The improvement of claim 1 wherein the reaction canister body includes first and second opposite side walls and a bridging portion joining said first and second opposite side walls, said bridging portion forming the inflator housing portion of the reaction canister body.

5. The improvement of claim 1 wherein the inflator housing portion of the reaction canister body is in the form of an inflator holder of partial circular cross section.

6. The improvement of claim 1 wherein the inflator housing portion of the reaction canister body is generally of a continuous circular cross sectional shape.

7. The improvement of claim 1 wherein the inflator and the inflator housing portion of the reaction canister body are longitudinally elongated and wherein the inflator output treatment fins are longitudinally extending.

8. The improvement of claim 7 wherein the inflator output treatment fins longitudinally extend substantially the entire length of the reaction canister body.

9. The improvement of claim 7 wherein the inflator output treatment fins longitudinally extend only along a segment of the longitudinal length of the reaction canister body.

10. The improvement of claim 1 wherein the inflator housing portion of the reaction canister body with the plurality of inflator output treatment fins is of one piece construction.

11. The improvement of claim 1 wherein the inflator housing portion of the reaction canister body with the plurality of inflator output treatment fins is of multiple piece construction including a tubular inner sleeve having an inner surface which includes the inflator output treatment fins.

12. A one-piece conventionally extruded reaction canister body having first and second opposite side walls and a bridging portion joining said first and second opposite side walls and adapted to house an associated inflator in spaced relation with the inflator avoiding contact therewith, the improvement comprising:

the bridging portion including a plurality of inflator output treatment fins extending towards, without contacting, the associated inflator.

13. The improvement of claim 12 wherein the reaction canister body is formed by conventional extrusion fabrication of a light weight metal selected from the group of aluminum and magnesium.

14. The improvement of claim 12 wherein the bridging portion is in the form of an inflator holder of partial circular cross section.

15. The improvement of claim 12 wherein the bridging portion is generally of a continuous circular cross sectional shape.

16. The improvement of claim 12 wherein the inflator and the reaction canister body are longitudinally elongated and wherein the inflator output treatment fins are longitudinally extending.

17. A process for the treatment of the gas output of a vehicular safety restraint inflator housed at least in part within a reaction canister body, said process comprising the step of:

contacting the gas output of the inflator with a treatment element comprising a plurality of inflator output treatment fins extending towards, without contacting, the associated inflator.

18. The process of claim 17 wherein the treatment comprises cooling the vehicular safety restraint inflator gas output.

19. The process of claim 17 wherein the treatment comprises removal of particulate from the vehicular safety restraint inflator gas output.