Patent ID: 7004074

Claim:
A cartridge for the controlled delivery of a fluid comprising: a. a case, having a closed lower end, an open upper end, and a continuous vertical side wall thereby defining a hollow interior; b. propellant, contained within said hollow interior of said case; c. a hemispherical burst cup, having an open lower end and a closed upper end thereby defining a hollow interior, being embossed so as to rupture into a plurality of approximately uniform petals, and being placed within said open upper end of said case; d. a charge casing surrounding and reinforcing said vertical side wall; e. a bulkhead, completely joined to said charge casing and covering over the top of said burst cup; f. means for securely holding said case within said charge casing and beneath said bulkhead; g. ignition means to ignite said propellant, thereby creating pressurized propellant gases within said case; and h. wherein said bulkhead opens into a nozzle passing vertically therethrough, and wherein said nozzle lies directly over said burst cup so that when said propellant gases burst said burst cup into said plurality of approximately uniform petals, said petals will press tightly against said nozzle, thereby efficiently metering said propellant gases, and said nozzle will prevent the ejection of said burst cup from said case.