Piston driven cold gas air bag inflator
US5301979A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1993 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | Jul 23, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R21/272
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Cold pressurized pure inert gas (i.e., argon, nitrogen) is delivered to an air bag with the addition of mechanical energy to aid in filling the bag by an inflator comprising a high strength container or bottle having a cylindrical section that is filled with inert gas. A piston is located at one end of the cylindrical section with a high energy pyrotechnic behind it. Both sides of the piston are at the same pressure during storage. An initiator is located in the high energy pyrotechnic. A burst disk is located at the opposite end of the cylindrical section. When the initiator is fired, the piston is driven down the length of the cylindrical section. When the pressure in the container exceeds the burst disk strength, the inert gas expands into the air bag or apparatus needing to be filled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.