Airbag cover assembly and method of forming same
US5121942A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1991 |
| Grant date | Jun 16, 1992 |
| Priority date | — |
| Expiry date | Jan 22, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/3038
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An airbag cover assembly for the passenger side of an automobile. The assembly includes an exterior skin, a pair of underlying sub-assemblies, each including a U-shaped galvanized steel strip, a short nylon scrim and a long glass mat sandwiched therebetween and extending therefrom such that a narrow space exists between adjacent edges of the glass mats. A weakening notch is formed across the inside surface of the exterior skin along the center line of the narrow space. A low density polyurethane foam is injected into a foaming tool cavity bearing the skin and pair of sub-assemblies. When cured, the foam covers the nylon scrims and glass mats and becomes immersed throughout the interstices of each, serving as the body of the final assembly. The glass mats prevent fragmentation of the low density foam upon deployment of the airbag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.