Patent ID: 6739362
Filing Date: 2004-05-25
Classification: B60R

Abstract:
A hybrid gas generator, in particular for filling a gas bag, the hybrid gas generator including:(a) a combustion chamber which contains a predetermined amount of a gas generating material and which includes an outlet opening of the combustion chamber; (b) an activating device for activating the gas generating material; (c) a gas vessel containing a stored gas, which is connected with said combustion chamber via said outlet opening of the combustion chamber, the gas vessel being sealed off in an initial state, and including at least one outlet opening for a gas mixture which is sealed off by means of an outlet membrane in the initial state; (d) wherein gas that is generated in said combustion chamber after said gas generating material has been activated acts upon a projectile via said outlet opening of the combustion chamber, which projectile is accelerated by the gas pressure and destroys said outlet membrane, whereby the gas mixture consisting of the gas generated and the stored gas escapes from said outlet opening; (e) said outlet opening of the combustion chamber runs into an interior space of said gas vessel via a guide channel having a predetermined length, (f) said projectile is configured as a projectile which is separate in the initial state and is provided in said guide channel, said projectile being located in said guide channel such that it keeps a distance from an outlet opening of said guide channel by a predetermined barrel length in the initial state, and (g) a membrane is provided between said projectile and said combustion chamber, which, as soon as a predetermined threshold pressure of the gas generated in said combustion chamber is exceeded, is destroyed by this pressure, whereby said projectile is immediately acted upon and accelerated by the pressure of the gas generated which exceeds the threshold pressure.