Patent ID: 7651126

Claim:
A device for protecting goods and/or persons comprising: a security element; and a gas generating system connected to the security element and comprising an explosive charge formed at least of: a primary pyrotechnic compound, in a first chamber, initiated by at least one initiator having a reinforcing charge and comprising at least one propellant having an optionally adjusted oxygen balance, and a secondary compound different than the primary compound, in a secondary chamber having a nozzle with a selected diameter such that the secondary chamber has a pressure of at least about 50 bars during combustion of the secondary compound, wherein the secondary compound decomposes in response to decomposition of the primary compound and comprises 1) an oxidant constituent that delivers gas only by decomposition, and 2) at least one reducing additive that contributes nitrogen, the additive being present in a proportion by weight less than about 70% of the weight of the primary-secondary compound; and an unconfined or a weakly confined interaction volume connected to the first chamber and the secondary chamber which receives combustion products from the primary and secondary compounds.