An igniter assembly includes an igniter of an electric ignition type including: an ignition portion including an igniting agent; a holding portion made of resin and covering at least a portion of the ignition portion and holding the ignition portion; and an electro-conductive pin configured to energize the ignition portion, and also includes an igniter collar made of metal and to which the igniter is attached. The igniter collar includes a fixing portion surrounding the holding portion to fix it. The holding portion includes a protrusion portion formed continuously around a periphery of the holding portion and formed integrally with the holding portion. The protrusion portion is press-attached to the fixing portion in a state where the holding portion is fixed to the fixing portion.

An igniter assembly includes an igniter, a collar, and a holding part, a cup body having a cylindrical peripheral wall and a lid wall and a closing part defining an accommodating space with the cup body, the peripheral wall is sectioned, in an axial direction, into a contact region in contact with the closing part and a noncontact region not in contact with the closing part, the holding part includes a base part covering the contact region and a surrounding wall formed continuously to the base part and surrounding the noncontact region, and a fragile part is formed in the holding part between a first area including at least a part of the base part and a second area including a tip end of the surrounding wall, and thus the second area deforms radially outward preferentially when a load is applied to the surrounding wall by the igniter activated.

A technique of improving pressure resistance performance of an igniter assembly is provided. The igniter assembly includes an igniter body including an ignition portion filled with an igniting charge and an electro-conductive portion extending from the ignition portion, an igniter collar including a tubular peripheral wall portion that surrounds at least the electro-conductive portion of the igniter body, and a resin molded article that is interposed between the igniter body and the igniter collar and integrates the igniter body and the igniter collar. The igniter collar includes a first support portion that is provided in an inner peripheral portion of the peripheral wall portion and is formed in a convex shape toward an inner side of the peripheral wall portion in a radial direction and thus buried in the resin molded article and a second support portion that is provided at a position in the inner peripheral portion proximal to the first support portion from the ignition portion in a direction along a center axis of the peripheral wall portion and is formed in a convex shape toward the inner side of the peripheral wall portion in the radial direction and thus buried in the resin molded article or formed in a concave shape toward an outer side of the peripheral wall portion in the radial direction and thus filled with the resin molded article.

A glass-metal feedthrough includes: an external conductor having a coefficient of expansion α.sub.external, and having an opening formed therein; an internal conductor disposed in the opening, the internal conductor including iron and having a coefficient of expansion α.sub.internal, the external conductor and the internal conductor being configured to not release nickel when in contact with a human or animal body or biological cells of a cell culture; and a glass material surrounding the internal conductor within the opening and having a coefficient of expansion α.sub.glass, the coefficient of expansion of the internal conductor α.sub.internal and the coefficient of expansion of the external conductor α.sub.external are such that a joint pressure on the internal conductor of at least 30 MPa is generated in a temperature range of 20° C. to a glass transformation temperature of the glass material.

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.

An initiator for a gas generator of a vehicle safety device includes a cup defining an interior, a primary pyrotechnic material disposed in the interior of the cup, and a secondary pyrotechnic material disposed in the interior of the cup. A separator member hermetically separates the primary pyrotechnic material from the secondary pyrotechnic material.

An actuator assembly that includes an actuator device. The actuator device includes a tubular housing with a first end and a second end, the tubular housing defining a storage chamber containing a pyrotechnic material to produce gas. At least one electrical connection is coupled to the first end, the electrical connection in reaction initiating communication with the pyrotechnic material. An actuator housing that partially encompasses the tubular housing, wherein an outer surface of the actuator housing comprises a hexagon shaped portion that extends along a longitudinal direction of the actuator housing. An assembly housing at least partially encompasses the actuator device, wherein an inner surface of the assembly housing comprises an engaging surface portion that extends along a longitudinal direction of the assembly housing that corresponds to and slidably engages with the hexagon shaped portion of the actuator housing.

A gas generator including an igniter, a combustion chamber, and a restriction part, the igniter including an accommodating chamber accommodating an explosive therein, an ignition portion provided in the accommodating chamber, and a separating part including a pressure receiving surface, the separating part being configured to be separable from the igniter and movable in a predetermined direction, the combustion chamber being configured to burn a gas generating agent filled outside the accommodating chamber, by the combustion of the explosive, the restriction part provided in a predetermined position in the predetermined direction from the igniter and restricting a movement of the separating part, and the separating part including a guide that directs the combustion product of the explosive by the pressure receiving surface toward the igniter, in a state where the movement of the separating part in the predetermined direction is restricted by the restriction part.

A glass-metal feedthrough consists of an external conductor, a glass material and an internal conductor. The internal conductor has a coefficient of expansion α.sub.internal, the glass material has a coefficient of expansion α.sub.glass, and the external conductor has a coefficient of expansion α.sub.external. The coefficient of expansion of the internal conductor α.sub.internal is greater than the coefficient of expansion of the glass material α.sub.glass and the coefficient of expansion of the external conductor α.sub.external is at least 2 ppm/K, such as at least 4 ppm/K, greater than the coefficient of expansion of the glass material α.sub.glass in the temperature range of 20° C. to the glass transformation temperature.

The invention relates to a propellant element for a gas generator for use in a safety device in the form of a coated pellet (24), wherein the coated pellet (24) comprises a core (20) made of a first pyrotechnical material (46) and a coating (22) made of a second pyrotechnical material (48) and enveloping the core (20), wherein the first pyrotechnical material (48) differs from the second pyrotechnical material (48) and wherein the core (20) includes an edge portion (26) projecting in the radial direction which extends through the coating (22) up to an outer contour (28) of the coated pellet (24), wherein the edge portion (26) is formed along a circumferential direction of the coated pellet (24) and has a smaller expansion than the core (20) in the axial direction of the coated pellet (24).