Accession Number : ADD009171

Title :   Primer Device.

Descriptive Note : Patent Application,


Personal Author(s) : Stansbury,LeRoy , Jr

Report Date : 06 Nov 1981

Pagination or Media Count : 14

Abstract : A primer device has a coupling device for efficiently dispersing the ignition products from a primary propellant into a main charge. The coupling device has a housing with a central chamber. This chamber has an inlet and outlet port. The housing and its inlet port are sealed over a cavity containing a primary propellant. A valve device is mounted at the inlet port for initially sealing combustion gases from the primary propellant within the cavity. This initial interval during which the cavity is sealed, fosters thorough burning of the primary propellant. When combustion causes pressure sufficient to open the value device, combustion products enter the central chamber of the housing. These combustion products bear upon a frangible seal, which is mounted at the outlet port of the housing. The frangible seal ruptures at a predetermined and repeatable pressure. As a result, the combustion gasses from the primary propellant are expelled from the housing at a high pressure and at a time when a great percentage of the primary propellant has been burned. As a result an energetic flame exits from the housing, efficiently and thoroughly igniting the main charge. (Author)

Descriptors :   *Patent applications, *Primers, *Igniters, Couplers, Explosive trains, Explosion gases, Combustion, Frangible, Seals(Stoppers), Inlets, Propellants, Valves, Ports(Openings)

Subject Categories : Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE