Dynamit Nobel Gmbh Explosivstoff-Und Systemtechnik

Jiang Zhang

Anton Bretfeld

Josef Kraft

Uwe Brede

Gerrit Scheiderer

Uwe Albrecht

Karl Bayer

Eduard Berenz

Waldemar Weuter

Lothar Anacker

Harald Frank

Hosef Kraft

An igniter element has two contacts ( ) which are on the contact side of a support body ( ), and which are connected via a resistance element ( ). By current feed to the contacts ( ), a primer mix ( ) is ignited on one active side of the support body ( ). The support body ( ) is placed in a fixing device ( ), whereby the former is fitted with at least one stop spring ( ) which catches on a stop shoulder ( ) of the holding device. Furthermore, the support body ( ) has a recess ( ) on the front-side in the region of the stop spring ( ), which recess is open in the direction of the active side. After igniting the primer mix ( ), pressure builds up on the active side, so that the outer surface ( ) of the stop spring ( ) is pressed against the inner surface of the fixing device ( ).

Ignition element, in particular for pyrotechnic mixtures

A gas generator includes an ignition charge, at least one ignition element for igniting the ignition charge, a storage chamber containing a compressed gas, which storage chamber is closed by a closure element, and an impact element destroying the closure element under pressure. A piston is provided as the impact element, which piston, after the destruction of the closure element, forms an exit gap with the opening closed by the closure element. The cross-sectional area of which exit gap changes in according to the position of the piston.

Gas generator

The hybrid gas generator to inflate airbags comprises two combustion chambers (,), in each of which a solid material charge (,) is placed, and a storage chamber (,) containing a pressurized storage gas. The storage chamber (,) is connected to diffusion chamber (,) by a closing member (,) which can be perforated. The first solid material charge (,), and the second solid material charge (,) can, for instance, can be sequentially ignited by separate igniter elements (,), thereby determining the pressure accumulation.

Hybrid gas generator

The invention relates to a gas generator for an air bag (,) including a cartridge (,) containing a gas-generating charge of solid material (,) and a storage reservoir (,) containing a storage gas (,). To trigger gas production the charge of solid material (,) is ignited. The resulting gas pressure tears off the front face (,) of the cartridge (,) along a peripheral notch (,). A sliding element (,) connected to the front face (,) pierces a sealing element (,) of the storage reservoir (,). A guiding channel (,) in which the front face (,) is guided in the manner of a piston, opens into a flow zone (,). When the front face (,) has reached the flow zone (,), reaction gas flows around the front face (,) into openings (,) in the tube-shaped sliding element (,). The reaction gas then flows into the storage reservoir (,) where it is mixed with the remaining storage gas. Because the control for releasing the two gases depends entirely on the trajectory, the operating performance of the hybrid gas generator is exact and reproducible.

Hybrid gas generator for airbag

A hybrid gas generator for an air bag (,) including ignitable gas-producing solid charge (,) placed in combustion chamber, a storage chamber (,) containing a gas (,) and a closed by a first bursting disk (,), a breakable separating wall (,) limiting the combustion chamber, which is connected to a hollow sliding piston (,) to perforate the first bursting disk (,) and a second bursting disk (,) in the separating wall (,) between the combustion chamber and the cavity (,) of the sliding piston (,). In order to construct the generator in a simpler and more economical form, the solid charge (,) is placed in a pyrotechnic cartridge that can be mounted separately the separating wall (,) forms the frontal border of the cartridge (,), a round notch (,) is placed on the round wall of the cartridge (,) serving as predetermined breaking point to break the separating wall (,) and the second bursting disk (,) is formed by a thinning on the separating wall (,).

Growing community of inventors

Nurnberg, Germany

Jiang Zhang