Airbag apparatus for automobile
US7165782B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2005 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | May 14, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2021/21537
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An airbag apparatus utilizes an interior panel of a vehicle. The interior panel has a rectangular fracture-opening section defined by at least one hinge groove and one fracture groove formed on an inside surface of the interior panel through irradiation with laser pulses. The fracture groove includes bridge portions and continuous hole portions provided alternately. Each of the bridge portions includes no laser-formed hole and has a thickness equal to the interior panel. Each of the continuous hole portions is composed of first holes for fracture which have a first depth and are successively formed between adjacent bridge portions through irradiation with laser pulses, and second holes which have a second depth smaller than the first depth and are each formed between adjacent first holes, through irradiation with laser pulses, so as to remove an original-thickness portion between the adjacent first holes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.