Bondable autoignition foil

• US 5,704,640 A
• Filed: 05/01/1996
• Issued: 01/06/1998
• Est. Priority Date: 05/01/1996
• Status: Expired due to Term

• Current Assignee: Autoliv ASP Incorporated (Autoliv Incorporated)
• Original Assignee: Morton International Incorporated (Autoliv Incorporated)
• Inventors: Woodbury, Mark B., Kendrick, Alan D., Monk, David B.
• Primary Examiner(s): Ellis, Christopher P.
• Application Number:
  US08/641,586
• Time in Patent Office: 615 Days
• Field of Search: 280/741, 280/736, 222/3, 102/530, 102/202, 422/165, 422/166
• US Class Current: 280/741
• CPC Class Codes: B60R 2021/26064 characterised by auto-ignition means
• CPC Class Codes: B60R 21/2644 using only solid reacting substances, e.g. pellets, powder
• CPC Class Codes: C06B 45/12 having contiguous layers or zones
• CPC Class Codes: C06C 9/00 Chemical contact igniters; Chemical lighters
• CPC Class Codes: F42B 3/04 for producing gas under pressure generators of inflation fluid especially adapted for vehicle air bags B60R21/26
• CPC Class Codes: F42C 19/0803 characterised by the combination of per se known chemical composition in the priming substance
• CPC Class Codes: F42C 19/0826 comprising an elongated perforated tube, i.e. flame tube, for the transmission of the initial energy to the propellant charge, e.g. used for artillery shells and kinetic energy penetrators

Abstract

An autoignition charge for pyrotechnic automotive airbag in inflation devices is provided in the form of a foil of a synthetic polymer or of a metal, having an adhesive on one surface of the foil and an autoignition material on the opposite surface of the foil. Pieces of foil are readily attached to inflator housings at any suitable location and are secured to the housing by the adhesive on one surface of the foil.

Claims

1. In an automotive airbag inflation device, a bondable autoignition foil comprising a carrier film, a thin layer of an adhesive adhered to a first face of said film and a thin coating of an autoignition composition on a second face, opposite said first face of said film.

2. The invention of claim 1 in which the bondable foil is adhered to a wall in said airbag inflation device.

3. The invention of claim 2 in which said foil is adhered to an inner face of an outer wall of a housing for said airbag inflation device.

4. The invention of claim 1 wherein said airbag inflation device includes a casing in which there are apertures and said foil is adhered to said casing and is disposed so as to cover said apertures.