Hybrid blowdown inflator with reduced pressure buildup
US5803493A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1997 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Apr 17, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R21/272
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hybrid inflator for a vehicle airbag module produces an initial release of essentially unheated, stored, pressurized gas from the gas storage chamber of the inflator by way of a projectile, releasable from a nozzle opening in a combustion chamber housing upon combustion of a gas-generating combustible material housed within the combustion chamber housing, which ruptures and passes through a frangible burst element retaining the stored, pressurized gas in the gas storage chamber of the inflator, thereby permitting, initially, the unheated, stored, pressurized gas to discharge through the ruptured burst element and flow externally past the combustion chamber housing in an isolation housing and then to exit the inflator through gas exhaust ports in the inflator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.