Igniter element with a booster charge

An igniter unit for igniting of propellant charges, pyrotechnical mixtures, or the like, which comprises an external housing, an igniter element operatively associated with a booster charge, said igniter element being arranged within one end of the external housing, an internal housing which contains said booster charge and which is within said external housing, said internal housing having a closed, lateral wall and a closed base at one end which is spaced from the igniter element and which is located close to the other end of said external housing, said wall and base withstanding the ignition pressure caused by the generation of a cloud of gas during ignition of said igniter element and said booster charge;

• in the area of the other end of the internal housing, said internal housing defining at least one opening for permitting the flowing off of the cloud of gas produced by ignition of the igniter element and the booster charge and providing means for choking of said cloud of gas, and means providing at least one discharge duct that connects said at least one opening to the other end of the external housing whereby the cloud of gas is passed via said one opening and said discharge duct to the other end of said external housing.