Electric primer with reduced RF and ESD hazard
US5027707A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 8, 1989 |
| Grant date | Jul 2, 1991 |
| Priority date | — |
| Expiry date | May 8, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42B3/125
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An electric primer using an intrinsic conductive pyrotechnic mixture is improved by the addition of a carbon layer between the inner and outer electrodes and the mixture. The carbon layer provides a parallel resistive current path between the electrodes in addition to the path through the conductive mixture. The addition of a carbon layer also increases the operable temperature range of the primer. The high energy firing threshold of the intrinsically conductive pyrotechnic mixture and the additional dissipative current path through the carbon layer coact to further reduce the sensitivity of the primer to RF radiation and ESD hazards.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.