Air bag inflator with pressure sensor
US5487559A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 13, 1994 |
| Grant date | Jan 30, 1996 |
| Priority date | — |
| Expiry date | Sep 13, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2021/26029
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An air bag inflator (20) includes gas stored at or above a predetermined pressure in a chamber (24) in a container (22). An initiator (10) connected with the container (22) is exposed to the pressure of the gas stored in the chamber (24). A closure can (120) of the initiator (10) includes an electrically conductive sensor portion (140) which is spaced apart from an electrically conductive contact can (200) when the pressure in the chamber (24) is at or above the predetermined pressure. If the pressure in the chamber (24) drops below the predetermined pressure, the sensor portion (140) moves into electrical contact with the contact can (200). The engagement of the sensor portion (140) with the contact can (200) completes an electrical circuit to provide an indication of low pressure in the inflator (20).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.