Air-bag device and a method for folding an air-bag
US6471238B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 4, 2000 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Apr 4, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R21/2171
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An air-bag 12 is designed to vertically expand after transversely expanding while being inflated. The air-bag 12 having a substantially circular shape is folded from its opposite ends toward its middle along a direction “a” corresponding to vertical direction and rolled in an opposite direction, is then folded in a zigzag manner one fold over another from its opposite ends toward its middle along a direction “b” (transverse direction), and is accommodated in a container casing 14. Accordingly, the inventive air-bag device and air-bag folding method can suppress an inflation (expansion) of the air-bag toward a passenger at an early stage of the inflation of the air-bag, promote a transverse expansion more than a vertical expansion of the air-bag at the early stage of the inflation, and prevent a blow out of a gas toward the passenger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.