Pyrotechnic air bag inflator with unitary filter
US5547638A · kind A · utility
21Cited by
18References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1994 |
| Grant date | Aug 20, 1996 |
| Priority date | — |
| Expiry date | Jul 26, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2279/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A pyrotechnic air bag inflator utilizing non-azide gas generating material such as mixtures of copper oxide and amino tetrazol includes a unitary, rigid, drop-in type, filter for cooling and filtering high temperature, high pressure corrosive gas generated when the air bag inflator is activated to inflate an associated air bag. The filter comprises a reticulated structure formed of strong, porous, metal, metal alloy or ceramic material having a high thermal diffusivity and surface area for absorbing heat from the gas and defining a plurality of tortuous passages for entrapping contaminants from the gas passing through the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.