PRESSURE CARTRIDGE CONTAINING SOLID FUEL PROPELLANT CHARGE

• US 3,641,935 A
• Filed: 06/23/1969
• Issued: 02/15/1972
• Est. Priority Date: 06/23/1969
• Status: Expired due to Term

• Current Assignee: Gunther Marondel, Hans Umbach, Heinz Gawlick
• Original Assignee: Gunther Marondel, Hans Umbach, Heinz Gawlick
• Inventors: Gawlick, Heinz, Marondel, Gunther, Umbach, Hans
• Primary Examiner(s): Stahl, Robert F.
• Application Number:
  US04/835,654
• Time in Patent Office: 967 Days
• Field of Search: 102/39,41 60/39.46,39.47
• US Class Current: 102/531
• CPC Class Codes: F42B 3/04 for producing gas under pressure generators of inflation fluid especially adapted for vehicle air bags B60R21/26

Abstract

A pressure cartridge containing solid fuel for the production of a propellant gas, particularly for use in fire extinguishing devices, including a case constructed from a synthetic resin material, a bottom plate connected to the case in a form-locking manner, and a primer charge.

Claims

1. A pressure cartridge containing a solid propellant charge which generates a propellant gas upon combustion, particularly, for use in fire-extinguishing devices as the means for propelling the fire-extinguishing substance under pressure comprising:

a metallic cartridge chamber;

a substantially cylindrical case means fabricated from synthetic resin material including readily destructible regions distributed about the circumference near a first end thereof and at least two external longitudinally extending ribs positioned to define together with the internal surface of said metallic cartridge chamber a corelike channel means, said solid propellant charge being disposed in said case means between said readily destructible regions and a second end thereof;

bottom plate means sealingly engaging said case means at said first end thereof in a form-locking manner; and

primer cap means for igniting said fuel upon impact.

2. A pressure cartridge according to claim 1, wherein said case means includes a relatively thick wall section between said readily destructible regions and said bottom plate means, the thickness of said section being substantially equivalent to the thickness of said external ribs, whereby said external ribs effectively separate said readily destructible regions from one another.

3. A pressure cartridge according to claim 2, wherein said case means further includes internal, longitudinally extending ribs spaced about the circumference of said case means in alternative relationship with said external ribs, said internal ribs terminating adjacent said readily destructible regions.

4. A pressure cartridge containing a fuel which generates a propellant gas upon combustion, particularly for use in fire-extinguishing devices as the means for propelling the fire-extinguishing substance under pressure comprising:

case means fabricated from a synthetic resin material, said case means being substantially cylindrical in configuration and including readily destructible regions distributed about the circumference thereof, bottom plate means sealingly engaging said case means at one end thereof in a form-locking manner, primer cap means for igniting said fuel upon impact, a disclike lid disposed between said fuel and said bottom plate means, and spring means adapted to compress said lid against said fuel during the combustion thereof until sufficient counterforce is generated by said propellant gas.

5. A pressure cartridge according to claim 4, further comprising a tubular member extending through said propellant charge to said primer cap, said tubular member containing an ignition charge.