Dual stage air bag inflator
US6364353B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1999 |
| Grant date | Apr 2, 2002 |
| Priority date | — |
| Expiry date | Jun 7, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2021/2648
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An inflator (10) comprises a housing (20) defining first and second combustion chambers (100, 120). A first inflation fluid source (140) in the first combustion chamber (100) is actuatable to effect flow of inflation fluid. A first initiator (112) in the housing (20), when energized, effects actuation of the first inflation fluid source (140). A second inflation fluid source (150) in the second combustion chamber (120) is actuatable to effect flow of inflation fluid. A second initiator (124) in the housing (20), when energized, effects actuation of the second inflation fluid source (150). The housing (20) deforms due to the pressure of inflation fluid in the housing upon actuation of one or both of the inflation fluid sources (140, 150). The housing (20), after deforming, has a fluid passage (90) for directing flow of inflation fluid out of the housing. The flow area of the fluid passage (90) varies in accordance with the pressure of inflation fluid in the housing (20). The housing comprises first and second housing parts (40, 30) having a first condition in abutting engagement with each other and a second condition, after deformation of the housing (20), spaced apart from each oth…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.