Gas generating system

• US 7,537,240 B2
• Filed: 02/21/2006
• Issued: 05/26/2009
• Est. Priority Date: 02/22/2005
• Status: Expired due to Fees

• Current Assignee: Automotive Systems Laboratory, Incorporated (Ningbo Junsheng Investment Group Co., Ltd.)
• Original Assignee: Automotive Systems Laboratory, Incorporated (Ningbo Junsheng Investment Group Co., Ltd.)
• Inventors: Blackburn, Jeffery S.
• Primary Examiner(s): Fleming; Faye M.
• Application Number:
  US11/358,786
• Publication Number:
  US 20060261584A1
• Time in Patent Office: 1,190 Days
• Field of Search: 280/741, 280/740, 280/736
• US Class Current: 280/741
• 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

A gas generating system (10) is provided including a housing (12) with a longitudinal axis (A), and a first baffle tube (22a) positioned within the housing (12) and having a pair of opposed ends. A second baffle tube (24a) is also positioned within the housing (12) and has a pair of opposed ends. A first pair of opposed surfaces (59a, 60a) is formed within the housing (12). Each of the first pair of opposed surfaces (59a, 60a) is sloped with respect to the longitudinal axis (A) and abuts a corresponding end of the first baffle tube (22a) to position the first baffle tube (22a) within the housing (12) such that a longitudinal axis of the first baffle tube (22a) is substantially coaxial with the longitudinal axis (A) of the housing (12). Each of the first pair of opposed surfaces (59a, 60a) also abuts a corresponding end of the second baffle tube (24a) to position the second baffle tube (24a) within the housing (12) such that a longitudinal axis of the second baffle tube (24a) is substantially coaxial with the longitudinal axis (A) of the housing (12). A vehicle occupant protection system (180) including the gas generating system (10) is also disclosed.

Claims

1. A gas generating system comprising:

a housing having a longitudinal axis and a pair of opposed ends;

a bulkhead positioned between the housing ends for partitioning the housing into a first chamber and a second chamber isolated from the first chamber so as to prevent fluid communication with the first chamber;

a first baffle tube positioned within the first chamber, the first baffle tube having a pair of opposed ends;

a first pair of opposed surfaces formed within the first chamber, each surface of the first pair of surfaces being sloped with respect to the housing longitudinal axis and abutting a corresponding end of the first baffle tube to position the first baffle tube within the first chamber such that a longitudinal axis of the first baffle tube is substantially coaxial with the longitudinal axis of the housing;

a second baffle tube positioned within the second chamber, the second baffle tube having a pair of opposed ends; and

a second pair of opposed surfaces formed within the second chamber, each surface of the second pair of surfaces being sloped with respect to the housing longitudinal axis and abutting a corresponding end of the second baffle tube to position the second baffle tube within the second chamber such that a longitudinal axis of the second baffle tube is substantially coaxial with the longitudinal axis of the housing.

2. The gas generating system of claim 1 further comprising an endcap for sealing an end of the housing, and wherein one surface of the first pair of surfaces is formed along the endcap and another surface of the first pair of surfaces is formed along the bulkhead.

3. The gas generating system of claim 1 further comprising a third baffle tube positioned within the first chamber, the third baffle tube having a pair of opposed ends, and wherein each surface of the first pair of surfaces abuts a corresponding end of the third baffle tube to position the third baffle tube within the first chamber such that a longitudinal axis of the third baffle tube is substantially coaxial with the longitudinal axis of the housing.

4. The gas generating system of claim 3 further comprising a fourth baffle tube positioned within the second chamber, the fourth baffle tube having a pair of opposed ends, and wherein each surface of the second pair of surfaces abuts a corresponding end of the fourth baffle tube to position the fourth baffle tube within the second chamber such that a longitudinal axis of the fourth baffle tube is substantially coaxial with the longitudinal axis of the housing.

5. A vehicle occupant protection system including a gas generating system according to claim 1.