Abstract: An igniting agent includes a powder of a Mg.Al alloy containing Mg: 55 to 70 wt % and Al: the balance. At least one selected from the group consisting of Ca, Mn, Li, Si, Sb, Sr, Zn, Zr, Sc, Y, Sn, Ba, and rare earth metals may be added in an amount of 0.5 to 10 wt %. An initiator is loaded with the igniting agent. A gas generator incorporates the initiator. The igniting agent provides high ignition speed and good grindability.

Abstract: An initiator includes a header substantially formed of at least one of ceramic and resin, a pair of electrode pins disposed through the header and having extremities facing a front end of the header, a bridge circuit line provided between the extremities of the electrode pins, a reaction agent configured to react upon being heated by the bridge circuit line, and a cup surrounding the reaction agent and a side surface of the header.

Abstract: An initiator employs ignition powder which can be manufactured easily, which can be handled safely, and which is stored in a cup of the initiator. Pins are inserted into and secured to holes of a header in the initiator. Distal end surfaces of the pins are flush with a distal end surface of the header; an insulative membrane is disposed so as to cover the distal end surface of one of the pins. When a high-voltage is applied between the pins, the membrane is destroyed and plasma is created. Further, when a subsequent low-voltage is applied between the pins, plasma is continuously generated. The ignition powder initiates its reaction by heat of the plasma.

Abstract: A gas generator G of the present invention has a construction in which a holder (3, 73) is fitted into a cup body (1, 71) and a tube body (2) or a container body (72) and encloses gas generants P and ignition agents (6, 76). The holder (3, 73) is formed of resin. A metallic reinforcement 4 is integrated with the resin holder (3) by insert molding. Or, a ring body (74) for sealing the cup body (71) and the holder (73) is mounted on the holder (73).

Abstract: A gas generator for actuating a vehicle occupant restraint device, including a first hollow body with a bottom and sides, gas generants filled densely in the first hollow body, an electric ignitor formed by housing igniting agents in a second hollow body with a bottom and sides, and closing the second hollow body with a plug, and a holder positioning the second hollow body in a center of the first hollow body and fixing the first hollow body while holding the plug of the electric ignitor. Particularly, a ratio of an empty space to a full volume of a space partitioned by an inner surface of the first hollow body, an outer surface of the second hollow body, and the holder is less than 20% by volume.

Abstract: An initiator and gas generator using the initiator. An initiator includes a conductive header, a reactant disposed on one side of the header, a cover member for covering the reactant, an electrode pin extending through the header to protrude from the other side of the header, and insulated from the header, a heating member provided between the one side of the header and the electrode pin so as to generate heat by the application of electricity, a cylindrical terminal protruding from the other side of the header coaxially with the electrode pin, and a connector-retaining portion provided at a leading end of the cylindrical terminal. The electrode pin and the cylindrical terminal are coaxial, the initiator can be mounted in an initiator housing in whatever direction it points, and the efficiency in mounting the initiator in the initiator housing is high. The size of the connector is also reduced.

Abstract: A gas generator which has an initiator and a gas generating agent for use in airbag deployment systems. An initiator includes a reaction agent, a casing formed by a cup and header, an electrode and a plasma generating agent. The plasma generating agent generates a plasma in response to the energization of the electrode that makes the reaction agent initiate a reaction.

Abstract: An initiator includes a casing, a reactant disposed in the casing, and electrodes arranged to contact the reactant. The reactant contains an electrically conductive substance in a manner such that once a voltage is applied to the electrodes, an electric current flows through the electrically conductive substance, thereby initiating a reaction of the reactant. The initiator is easily manufactured with low manufacturing cost.

Abstract: A gas generator includes a first cup 10 packed with gas generating agent 14 that generates gas by burning; a second cup E disposed in an inside of the first cup 10 and containing ignition agent; and a holder 9 holding the first cup 10 thereon and also holding a plug B of the second cup E or the second cup thereon. In the gas generator, there is provided a separator 15 which allows the gas generating agent 14 to be confined within the first cup 10 so as to shield the gas generating agent from the second cup E. Further, the separator 15 is so disposed as to cover the second cup E. In addition, seal materials, such as an O-ring 16, is arranged in a moisture inflow path through which moisture or equivalent comes in from outside of the gas generator 18.

Abstract: A circuit breaker includes, a cylindrical portion having a gunpowder and a exploding unit for exploding the gunpowder by application of electric power to the gunpowder, the cylindrical portion being provided with an opening at at least one end; a base material securing the cylindrical portion, at least the surface of which is made of insulating material; a conductor fixed to the base material and having a break portion located at a position opposite to the opening of the cylindrical portion, the break portion being broken by explosive force of the gunpowder; a first metallic cover portion covering the cylindrical portion and the break portion; and a second metallic cover portion covering the base material from an opposite side to the cylindrical portion, wherein the first and second cover portions are fixed to the base material by directly connecting the first and second cover portions each other.