Gas generator with two pyrotechnic charges
US8720946B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2011 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Apr 15, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2021/2648
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A gas generator has two pyrotechnic charges in two chambers having openings for gas outlet to the outside. Only the first chamber is provided with an igniter for first charge. The chambers are separated by a third wall with a through hole for permanent gas communication, sealed in an initial state by a cap. The cap is configured to be broken under the pressure of the combustion gases from first charge to keep the hole opened permanently and allow the combustion gases from the first charge to go via the hole kept permanently opened from a first chamber to a second chamber, where these gases induce the combustion of charge. When in an initial state, the cap is configured to go under the pressure of the combustion gases from second charge to the permanent state, in which the cap is broken to keep hole opened permanently and allow the combustion gases from said second charge to go via the hole kept permanently open from the second chamber to the first chamber, where this combustion gases induce the combustion of charge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.