Auto igniting pyrotechnic booster

• US 20050235863A1
• Filed: 01/28/2005
• Published: 10/27/2005
• Est. Priority Date: 01/28/2004
• Status: Abandoned Application

• 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: Stevens, Bruce A.
• Application Number:
  US11/048,655
• Publication Number:
  US 20050235863A1
• Time in Patent Office: Days
• US Class Current: 102/531
• CPC Class Codes: B60R 21/2644 using only solid reacting substances, e.g. pellets, powder
• CPC Class Codes: C06B 45/18 comprising a coated component particles dispersed in a matrix C06B45/04; coated explosive charges F42B
• CPC Class Codes: C06C 9/00 Chemical contact igniters; Chemical lighters

Abstract

The present invention generally relates to auto-ignition/booster compositions for inflators of occupant restraint systems, for example. An auto-ignition/booster composition in accordance with the present invention includes an auto-ignition composition combined with silicone. When uncured silicone is added to a mixture of the dry granulated constituents of both the auto-ignition and booster components, an extrudable or thixotropic mixture is produced. The uncured mixture may then be applied to any desired surface within an associated gas generator within a vehicle occupant protection system, for example, thereby simplifying gas generator manufacture. A gas generating system incorporating the present composition is also contemplated.

Claims

1. A gas generating system comprising a composition, the composition comprising:

an auto-ignition component having an auto-ignition temperature equal to or less than 250°

C.; and

a booster component comprising silicone at about 10-30 weight percent of the total composition.

2. The gas generating system of claim 1 further comprising an inflator containing said composition, wherein said composition functions as an auto-ignition and booster compound.

3. A gas generating system comprising an inflator formed from a method of manufacturing an inflator, the method comprising the steps of:

combining a granulated auto-ignition composition with uncured silicone to form an auto-ignition/booster composition wherein the silicone is provided at about 10-35 wt % of the total composition;

providing an inflator having a surface for receipt of the auto-ignition/booster composition wherein the surface provides thermodynamic communication between the auto-ignition/booster composition and an exterior of the inflator, and fluid communication with a primary gas generant composition within the inflator; and

extruding the auto-ignition/booster composition containing the uncured silicone onto the surface.

4. A method of manufacturing an inflator, the method comprising the steps of:

combining a granulated auto-ignition composition with uncured silicone to form an auto-ignition/booster composition wherein the silicone is provided at about 10-35 wt % of the total composition;

providing an inflator having a surface for receipt of the auto-ignition/booster composition wherein the surface provides thermodynamic communication between the auto-ignition/booster composition and an exterior of the inflator, and fluid communication with a primary gas generant composition within the inflator; and

extruding the auto-ignition/booster composition containing the uncured silicone onto the surface.