Pyrotechnic gas generator with adaptable flow rate and volume for air bags
US5970880A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 16, 1998 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Mar 16, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2021/2648
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention relates to a pyrotechnic hot-gas generator intended for motor vehicle safety. The generator is in the form of a one-piece cylindrical tube (1) which is broken down into an upstream part (7) and a downstream part (10) each containing in particular an igniter (13, 14) and a pyrotechnic charge, and which flank an intermediate part (8) constituting a diffuser. The upstream part (7) and the downstream part (10) are each separated from the intermediate part (8) by an internal partition (3, 4) bearing a closed-off nozzle (5, 6). A safety valve (26) is pressed against the partition (4) and makes it possible to vary the volume of gas generated or the rate of inflation of the bag in accordance with the electrical signals received by the generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.