Gas generator for multi-stage air bag and air bag device
US6722694B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2000 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Sep 25, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2021/2648
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
There is provided a multistage gas generator for an air bag in which the entire size of a container is suppressed, a volume ratio of each combustion chamber can arbitrarily be adjusted. Ignition means 311 are respectively disposed in the combustion chambers 305 and 306 provided in a housing 303. At least one of the combustion chambers is provided inside an inner shell 304 disposed eccentrically with respect to the center axis of the housing 3. The respective ignition means are disposed eccentrically with respect to the center axis of the housing 3. Further, a communication hole which allows mutual communication between the combustion chambers is provided. An automatic ignition material (AIM) which is to be ignited and burnt by a transmitted heat is provided in either one of the combustion chambers. One or both of axial end surfaces of a cylindrical filter means 350 are formed as inclining end surfaces 351 which get narrower in the axial extending direction. A supporting member 353 for supporting the inclining end surfaces 351 of the filter means 350 which is expanded radially by passage of an activation gas is provided in the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.