Unitary filter for pyrotechnic air bag inflator
US5556439A · kind A · utility
15Cited by
18References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1995 |
| Grant date | Sep 17, 1996 |
| Priority date | — |
| Expiry date | Apr 7, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2279/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A unitary rigid filter for use in a high temperature, high pressure application in a pyrotechnic airbag inflator includes a matrix structure formed of porous carbonaceous foam material coated with silicon material and having a high thermal conductivity coefficient for absorbing heat from the gases generated on ignition of a pyrotechnic material. The porous, carbonaceous foam has a porosity or permeability of approximately 40 ppi to 80 ppi and a thin, sheet-like liner of porous, ceramic paper is mounted on the body of the foam matrix structure for improving operational characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.