A gas generator includes, a housing provided with a gas discharge port, an ignition chamber, accommodating an igniter and a transfer charge, provided on an end portion of the housing, a combustion chamber disposed within the housing and accommodating a gas generating agent, a rupturable closing member partitioning the combustion chamber from the ignition chamber and including a rupturable portion ruptured upon an actuation of the gas generator, and an inner tube extending from the closing member toward the gas discharge port inside the combustion chamber. The inner tube defines outside thereof a space containing the gas generating agent, and defines inside a hollow space. The inner tube is provided with a plurality of through holes. The inner tube includes one end communicating the hollow space with the ignition chamber to transfer the transfer charge in a burning state toward an opposite end when the rupturable portion is ruptured.

An initiator for a gas generator of a vehicle safety device includes a cup defining an interior, a primary pyrotechnic material disposed in a primary combustion chamber in the interior of the cup, and a pair of electrical pins in reaction initiating communication with the primary pyrotechnic material through a bridge wire. The bridge wire is in reaction initiating contact with the primary pyrotechnic material at a first end of the primary pyrotechnic material. The primary pyrotechnic material is compacted within the primary combustion chamber to include a depression at a second end of the primary pyrotechnic material, the second end opposite the first end.

The invention relates to an igniting unit (10), especially for an inflator, comprising an electric igniter (11) including a first inner cap (12) which forms a space (14) for being filled with a booster propellant charge with a second outer cap (13). In accordance with the invention, the second cap (13) is an electrically non-conductive insulating cap.

A gas generator including, a housing provided with a gas discharge port, an ignition chamber provided on a side of a first end portion of the cylindrical housing and including an igniter, a combustion chamber disposed within the housing and containing therein a molded article of a gas generating agent, a rupturable closing member partitioning the combustion chamber from the ignition chamber and including therein a rupturable portion partially ruptured upon an actuation of the gas generator, a molded article of a transfer charge contained in the ignition chamber, an inner tube disposed in the combustion chamber and extending from the closing member toward the gas discharge port and defining, in an outside thereof, a space that contains the molded article of the gas generating agent, the inner tube including therein a hollow space and having a peripheral wall provided with a plurality of through holes, the inner tube including a first open end and communicating the hollow space with the ignition chamber so as to transfer the molded articles of the transfer charge in a burning state toward the second end portion in the inner tube when the rupturable portion is ruptured.

The invention relates to an igniting unit (10), especially for an inflator, comprising an electric igniter (11) including a first inner cap (12) which forms a space (14) for being filled with a booster propellant charge with a second outer cap (13). In accordance with the invention, the second cap (13) is an electrically non-conductive insulating cap.