Patent ID: 8011303
Filing Date: 2011-09-06
Classification: B60R

Abstract:
1. A gas generator, comprising: a housing including a diffuser shell provided with a gas discharge port and a closure shell, a cylindrical filter disposed inside the housing, a first combustion chamber defined inside the cylindrical filter, and a second combustion chamber defined inside the first combustion chamber, the first combustion chamber having an enhancer chamber and a first gas generating agent stored outside the enhancer chamber, the enhancer chamber, being defined by an enhancer chamber cup member and accommodating therein a first ignition device for igniting and combusting the first gas generating agent, the enhancer chamber cup member including a first end, a second end opposite to the first end, and a circumferential surface extending from the first end to the second end, the first end being provided with a first top plate, and the circumferential surface including an enhancer hole communicating the enhancer chamber with the first combustion chamber during activation, the second combustion chamber being surrounded by a combustion chamber cup member disposed eccentrically to a central axis of the housing, the combustion chamber cup member including a second top plate and a through-hole for communicating the second combustion chamber with the first combustion chamber during activation, the second combustion chamber accommodating a second ignition device and a second gas generating agent therein, and the first top plate being positioned higher than the second top plate so that a space accommodating the first gas generating agent is provided above the second top plate, and the enhancer hole being provided such that the enhance hole opposes the space where the first gas generating agent is provided.