Gas generator

• US 20080118408A1
• Filed: 10/30/2007
• Published: 05/22/2008
• Est. Priority Date: 11/07/2006
• Status: Abandoned Application

• Current Assignee: Daicel Chemical Industries Limited
• Original Assignee: Daicel Chemical Industries Limited
• Inventors: Kobayashi, Tomoharu, Matsuda, Naoki, Numoto, Kenji
• Application Number:
  US11/978,565
• Publication Number:
  US 20080118408A1
• Time in Patent Office: Days
• US Class Current: 422/167
• CPC Class Codes: B60R 2021/26011 using a filter through which the inflation gas passes
• CPC Class Codes: B60R 21/2644 using only solid reacting substances, e.g. pellets, powder

Abstract

The present invention provides a gas generator including an igniter, a gas-generating agent and a coolant/filter in a housing,

• • a positioning portion for the coolant/filter, which is formed in advance into a convex shape on the inward side of the housing and that is provided at least in either of the top surface or the bottom surface of the housing,
  • the coolant/filter being positioned by the positioning portion.

Claims

1. A gas generator comprising an igniter, a gas-generating agent and a coolant/filter in a housing,

a positioning portion for the coolant/filter, which is formed in advance into a convex shape on the inward side of the housing and that is provided at least in either of the top surface or the bottom surface of the housing,

the coolant/filter being positioned by the positioning portion.

2. The gas generator according to claim 1, wherein the positioning portion is an annular projection or a combination of a plurality of independent projections formed into a convex shape on the inward side of the housing in the top surface of the housing.

3. The gas generator according to claim 1, wherein the positioning portion is formed by pressing the housing in the predetermined position from the outside.

4. The gas generator according to claim 1, wherein the positioning portion is an annular projection formed into a convex shape on the inward side of the housing in the upper surface of the housing and has functions of positioning the coolant/filter and preventing a short-path through which combustion residues leak from a contact portion of the coolant/filter and an inner surface of the housing.

5. The gas generator according to claim 1, which is a gas generator in a disk shape.

6. The gas generator according to claim 2, wherein the positioning portion is formed by pressing the housing in the predetermined position from the outside.

7. The gas generator according to claim 2, wherein the positioning portion is an annular projection formed into a convex shape on the inward side of the housing in the upper surface of the housing and has functions of positioning the coolant/filter and preventing a short-path through which combustion residues leak from a contact portion of the coolant/filter and an inner surface of the housing.

8. The gas generator according to claim 2, which is a gas generator in a disk shape.