Inflatable knee airbag having two chambers separated by an internal tether
US8297649B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 16, 2009 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Jul 16, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2021/23324
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Inflatable airbag cushions can be formed with one or more inflatable chambers, each having different inflated widths and volumes. For example, an inflatable knee airbag can have a first chamber that is adjacent to the periphery of the airbag and a second chamber that is nested within the first chamber. The two chambers can be fluidly coupled and the second chamber may have a vent formed in it that can release inflation gas out of the airbag. The airbag may have more than one nested chamber. The nested chambers can be defined by one or more internal tethers that can be formed from one or more pieces of material. The airbag can be configured such that it and any internal tethers are produced from a single panel of material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.