Electro-pyrotechnic initiator built around a complete printed circuit
US6539875B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2002 |
| Grant date | Apr 1, 2003 |
| Priority date | — |
| Expiry date | Jan 7, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42B3/188
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An electro-pyrotechnic initiator suitable for use in igniting a pyrotechnic generator of gas for inflating an air bag, said initiator being connected to an electric cable comprising two conductive wires, said initiator comprising:(i) a thermosensitive charge which is carried by a heating resistive element consisting of a resistive strip and which is initiatable by said heating resistive element,((ii) an electric circuit connecting said resistive element to said conductive wires, and(iii) means of electromagnetically protecting said electric circuit, said heating resistive element, said electric circuit and said means of electromagnetically protecting being integrated into a circuit of conductive strips which are joined to said conductive wires and which are printed on a support, said support being in the form of a thin parallelepedial card with two opposite flat faces, said conductive strips being printed on the same face of said support to provide a complete circuit comprising said conductive strips, the heating resistive element covered by the thermosensitive charge and the means of electromagnetic protection around which said initiator is built, said circuit support being partia…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.