S.n.c. Livbag

Seva Technologies

Etienne Lacroix

Trw Airbag Systems Gmbh

Paul-Philippe Cord

Christian B Perotto

Bengt Morner

Kyriakos Vavalidis

Michel Kozyreff

Bernard Castagner

Michael Niehaus

Fabrice Boyer

Virginie Desbleumortiers

Bernard Doin

Sylvie Martinel, Legal Representative

Fabien Béteille

Cédric Frances

Céline Zapata-Massot

Myriam Sijilmassi

Céline Zapata Épouse Massot

A gas generator for a safety system includes an explosible charge formed at least by a primary pyrotechnic compound, in a first chamber initiated by at least one initiator provided with a reinforcing charge and a secondary compound, in a second chamber, the decomposition of which is entailed by products of combustion of the primary compound, an interaction of the products of combustion of the primary compound and those of the secondary compound through an oxidation-reduction reaction occurring in a slightly confined volume, the first chamber communicating with said second chamber through a central nozzle and said second chamber being provided, at a first zone close to said first chamber, with orifices that discharge the gases and contain, in a second zone, said secondary compound; and means forming an obstacle to the passage of the gases installed in said second chamber between said first and second zones, said obstacle-forming means allowing the gases to pass into a central part and forming an obstacle to their passage into a peripheral part with sufficient transparency for the gas interaction volume to be slightly confined.

Gas generator for a safety system

A device for protecting goods and/or persons including a security element; and a gas generating system connected to the security element and including an explosive charge formed at least of: a primary pyrotechnic compound, in a first chamber, initiated by at least one initiator having a reinforcing charge and including at least one propellant having an optionally adjusted oxygen balance, and a secondary compound, in a secondary chamber, including an oxidant constituent capable of delivering only gas by decomposition and at least one reducing additive having a function of contributing nitrogen, the additive being present in a proportion by weight less than about 70% of the weight of the primary-secondary compound.

Device for implementing a security element for the protection of goods and/or persons

A method of manufacturing a cold-gas pyrotechnic generator of the type having a casing including a base and a cover with an internal chamber accessed by a central opening for the reception of pyrotechnic elements includes the steps of placing the cover on the base with filtering material inserted, rotating the casing while introducing the pyrotechnic elements through the central opening and then inserting an ignition device in the central opening.

Method for manufacture of a cold-gas pyrotechnic generator

A device for protecting, by impact absorption, the occupants of a motor vehicle in the event of a collision includes a pyrotechnic generator (2) of hot gases, the temperature of which at the outlet of the generator is equal to at least 1,800.degree. C. and a sealed or virtually sealed inflatable bag (3) fastened to the said generator. Communication between the bag (3) and the generator (2) is ensured by openings (27) with a constant cross-section arranged on the generator and by a deflector (28). The invention also relates to the use of a device of this type combined with a seat belt, in particular in order to improve the protection of motor vehicle drivers.

Impact-absorbing device for occupants of a motor vehicle and use of this

The invention relates to a cold-gas pyrotechnic generator, in particular intended for automobile safety, as well as a method for manufacturing this generator. The generator according to the invention comprises a casing (2) of revolution consisting of a base (10) and a cover (20) establishing:

Cold-gas pyrotechnic generator

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Paris, France

Paul-Philippe Cord