Inflator for a vehicle airbag system and a pyrogen igniter used therein
US5623115A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 1995 |
| Grant date | Apr 22, 1997 |
| Priority date | — |
| Expiry date | May 30, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2021/26029
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An elongated gas generator, or inflator, includes a pyrogen igniter mounted at one end thereof. The pyrogen igniter encloses a unitary grain of ignition material having a centrally located cavity. An initiator, or squib, is located to ignite the unitary grain at the surface of its centrally located cavity. The combustion products given off by the igniter are directed through a port and into a clear ignition channel provided in the center of the pyrotechnic gas generant material which extends the length of the gas generator, thereby causing the gas generant material to produce sufficient gas to inflate an associated airbag. The unitary grain of ignition material used in the pyrogen igniter facilitates and simplifies the assembly and manufacture of the igniter structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.