Airbag inflator with adaptive flow orifice
US6655712B1 · kind B1 · utility
8Cited by
11References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 2002 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | May 10, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2021/26094
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An inflator device having a chamber wherein a pressure dependant gas generant reacts to produce inflation gas and at least one orifice allowing the gas to pass and inflate an airbag. The at least one orifice is defined at least in part by a shape memory alloy having an austenite finishing temperature (Tf). The at least one orifice has a first fluid flow through area (A1) when at a temperature less than Tf and a second fluid flow through area (A2) when at a temperature greater than Tf. The second fluid flow through area (A2) is less than the first fluid flow through area (A1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.