Multi-chamber knee airbag
US8376396B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2010 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | Feb 26, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2021/2395
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An airbag module for a vehicle includes a gas generator for generating a gas and a multi-chamber airbag operatively connected to the gas generator for receiving the gas. The airbag defines a first inflation chamber, at least one second inflation chamber, at least one third inflation chamber and a fourth inflation chamber. The airbag includes internal vents configured to allow selective communication between the first chamber and each of the at least one second chamber and the at least one third chamber and selective communication between the at least one second chamber and the fourth chamber. The internal vents are configured to maintain a higher pressure in selective chambers by restricting ability of the gas to escape the selective chamber. The order of internal venting between the respective inflation chambers controls the pressure and timing of inflation of the multi-chamber airbag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.