Biaxial dual stage inflator with extended gas delivery for a vehicular airbag system
US6820898B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2002 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Mar 19, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/1647
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A dual flow inflator for airbags is disclosed, together with related manufacturing, installation, and deployment methods. The inflator includes a primary gas chamber with a first exit orifice and a secondary gas chamber in gaseous communication with the primary gas chamber. The inflator also includes a flow restrictor positioned between the gas chambers. In use, the inflator provides primary and secondary flows of gas from the exit orifice. The primary gas chamber may include multiple exit orifices in order to provide axial gas flows in opposite directions upon activation so that each gas flow neutralizes the thrust of the other. The exit orifices may comprise frangible structures such as burst discs, scored surfaces, and compression closures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.