Pyrotechnic gas generator with plastic bonded charge
US6490978B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1997 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Dec 18, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2021/26094
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention relates to a pyrotechnic gas generator (1) intended especially for motor vehicle safety.The generator (1) includes a pyrotechnic charge (12) of plastic-bonded powder of “Lova” type and a gas exit orifice (14a, 14b) closed by an erodable ring (15) which has a cylindrical orifice (16) shut off by a cover (17). The rupture pressure of the cover (17) and the initial diameter of the orifice (16) are determined so as to avoid the initial extinction of the charge. In the course of functioning the diameter of the orifice (16) increases to avoid the risk of overpressure within the generator.The generator (1) can be employed in a protective device using an inflatable cushion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.