Air bag door, method of controlling breakage of fracture lines, and method of deploying air bag
US8011688B2 · kind B2 · utility
7Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2007 |
| Grant date | Sep 6, 2011 |
| Priority date | — |
| Expiry date | Nov 4, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R21/2165
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An air bag door in which the remaining thickness of a substrate at a centerline of a fracture groove formed into the shape of an air bag door on a back surface of the substrate is set to be smaller than other portions, and dotted fracture perforations for braking the superficial material are selectively provided at the centerline portion and near meeting points between sidelines and the centerline.According to the invention described above, the substrate and the superficial material of the air bag door are broken in a desirable order of breakage by portions synchronously with each other when the air bag is expanded and deployed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.