Airbag cushion and mounting therefor
US5901979A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 1997 |
| Grant date | May 11, 1999 |
| Priority date | — |
| Expiry date | May 6, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2021/23115
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An airbag cushion has a deployment tube connected at its inner end to a backing plate securing an inflator and at its outer end to a cushion-shaping enclosure. The periphery of the cushion-shaping enclosure is attached there about to a boundary wall which extends inward to the backing plate at a location surrounding the inner end of the deployment tube. The boundary wall defines an aspirated-air chamber surrounding the tube. As the tube and cushion-shaping enclosure are inflated, the enclosure pulls the boundary wall out of the canister creating a vacuum in the aspirated-air chamber. A one-way valve in the backing plate passes aspirated air into the aspirated-air chamber. A port connects the cushion-shaping enclosure to the aspirated-air chamber to pressurize the aspirated-air chamber at the end of inflation. The one-way valve blocks escape of the pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.