Gas generating system

• US 8,375,862 B2
• Filed: 12/04/2009
• Issued: 02/19/2013
• Est. Priority Date: 12/04/2008
• Status: Active Grant

• Current Assignee: Joyson Safety Systems Acquisition, LLC (Ningbo Junsheng Investment Group Co., Ltd.)
• Original Assignee: TK Holdings Incorporated (Ningbo Junsheng Investment Group Co., Ltd.)
• Inventors: Morgan, Richard W., Quioc, Eduardo L.
• Primary Examiner(s): Hayes, Bret
• Assistant Examiner(s): TILLMAN, JR, REGINALD S
• Application Number:
  US12/631,774
• Publication Number:
  US 20110088583A1
• Time in Patent Office: 1,173 Days
• Field of Search: 102/530, 102/531, 102/200, 102/202.12, 102/202.14, 102/202.5, 102/202.9, 280/741
• US Class Current: 102/530
• CPC Class Codes: B60R 2021/26029 Ignitors
• CPC Class Codes: B60R 2021/26076 characterised by casing
• 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

Abstract

A base assembly for a gas generating system is provided. The base assembly includes a base and a retainer affixed to the base. In an alternative embodiment, the assembly includes an initiator molded to both the base and the retainer.

Claims

1. A base assembly for a gas generating system, comprising:

a base;

a retainer affixed to the base;

an initiator extending into an opening in the retainer;

a quantity of moldable material positioned between, and in contact with, the initiator and the base so as to form a gas-tight seal therebetween; and

a quantity of moldable material securing the initiator to the retainer so as to prevent relative motion between the retainer and the initiator, the moldable material being positioned between and in contact with the initiator and the retainer so as to form a gas-tight seal therebetween.

2. The base assembly of claim 1 further comprising an initiator molded to the base and to the retainer.

3. The base assembly of claim 1 wherein the initiator is spaced apart from the base and the retainer.

4. The base assembly of claim 3 wherein the opening in the base is sized to prevent movement of the portion of the initiator on the second side of the base to the first side of the base.

5. The base assembly of claim 1 wherein the base includes an orifice, the orifice extending between a first side of the base and a second side of the base opposite the first side, and wherein the moldable material extends through the orifice and is in contact with the base along the first side and the second side.

6. A gas generating system comprising a base assembly in accordance with claim 1.

7. A vehicle occupant protection system comprising a base assembly in accordance with claim 1.

8. The base assembly of claim 1 wherein the base has a first wall, a second wall extending opposite the first wall, and a connecting portion connecting the first and second walls, and wherein both the first and second walls extend in a first direction away from the connecting portion.

9. The base assembly of claim 1 wherein the retainer includes a base portion, an inner wall extending from an inner edge of the base portion, and an outer wall extending from an outer edge of the base portion and spaced apart from the inner wall, the inner wall defining a cavity structured to receive an initiator therein, and the inner wall, base portion, and outer wall combining to define the cavity structured to receive the filter therein.

10. The base assembly of claim 5 wherein the moldable material is in contact with the base along the inside of the orifice.

11. A base assembly for a gas generating system comprising:

a base including an orifice extending between a first side of the base and a second side of the base opposite the first side;

a retainer affixed to the base;

an initiator extending through the orifice; and

a quantity of moldable material securing the initiator to the retainer,

wherein the moldable material extends through the orifice and is in contact with the base along the first side and the second side.

12. A vehicle occupant protection system comprising a base assembly in accordance with claim 11.

13. A gas generating system comprising a base assembly in accordance with claim 11.

14. The base assembly of claim 11 wherein the initiator is spaced apart from the base and the retainer.

15. A method for fabricating a base assembly for a gas generating system, comprising the steps of:

providing a base having an orifice formed therein;

providing an initiator;

providing a retainer defining a cavity;

positioning the retainer with respect to the base such that the base orifice is positioned within the retainer cavity;

after the step of positioning the retainer with respect to the base, positioning the initiator such that at least a portion of the initiator resides within the cavity;

after the step of positioning the initiator, introducing a flowable, hardenable material into the cavity such that the initiator is secured to the base and to the retainer by the material upon hardening of the material.

16. The method of claim 15 wherein the step of introducing the material comprises the step of introducing the material between the initiator and the base and between the initiator and the retainer.

17. A gas generating system comprising a base assembly fabricated using a method in accordance with claim 15.

18. A vehicle occupant protection system comprising a base assembly fabricated using a method in accordance with claim 15.

19. The method of claim 15 wherein the step of introducing the material comprises the step of introducing the material so as to be in contact with the initiator, the base, and the retainer.

20. The method of claim 15 further comprising, after the step of positioning the retainer with respect to the base and prior to the step of positioning the initiator, securing the retainer in position with respect to the base.