Abstract: An ignition powder composition for igniter of which friction sensitivity can be lowered with the required firing current sensitivity being achieved is provided as ignition powder for an igniter that is activated by an electrical signal. The ignition powder composition for igniter contains metal hydride (A); metal powder (B) that is one or more selected from the group consisting of tungsten powder, molybdenum powder, aluminum powder, titanium powder, and magnesium powder; and perchlorate (C).

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.

Abstract: A spontaneous firing explosive composition for use in a gas generator for an airbag containing a fuel, an oxidizer, a combustion modifier, and a binder.

Abstract: A squib for a gas generator, comprising a magazine which is formed with a squib cup and a squib plug and is sealed; a pair of electrode lead pins penetrating through said squib plug to said magazine; a bearing wire connected to ends of said electrode lead pins; and an explosive contained in said magazine, said explosive composition containing a spontaneous firing explosive composition comprising carbohydrates, oxohalogenates and metal oxides.

Abstract: A gas generator for an air bag is provided which contains a spontaneously-firing explosive composition in which at least one of a squib, igniting agent and a gas generant is contained in a casing formed of a light alloy material, the spontaneously-firing explosive composition containing carbohydrates, oxohalogenates and metal oxides or alternatively carbohydrates, oxohalogenates, metal oxides and one or more synthetic resins. The spontaneously-firing explosive composition has a spontaneous firing property in temperature range of either 165.degree.-220.degree. C. or 165.degree.-200.degree. C. The effective temperature range may be selected as needed.

Abstract: An apparatus for actuating a plurality of safety devices equipped in a vehicle for protecting occupants from an impact of a collision has a plurality of squibs (4,5) connected in series with each other so as to form a series circuit (6) and ignited by a current flowing through and conformed to one and the same standard. A power source (3) supplies electrical energy to the series circuit (6), and a collision detector (7) allows a current to flow from the power source (3) to said series circuit (6) when detecting a collision. A required energy for igniting all of the squibs (4,5) is thus supplied before the series circuit (6) opens electrically at one squib.