Pretensioner testing apparatus and method
US7159478B2 · kind B2 · utility
4Cited by
21References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2004 |
| Grant date | Jan 9, 2007 |
| Priority date | — |
| Expiry date | Apr 14, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R22/46
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A test system is provided for simulating pre-tensioner systems that use pyrotechnic gas generators. In a preferred form, the test system includes a pneumatic cylinder energized by pressurized air from an accumulator and passing through a fast acting ball valve. A substantially linear relationship is established between accumulator pressure and the time rate of change of acceleration of a piston in the pneumatic cylinder. Use of the test system allows improved evaluation of seat belt systems employing pre-tensioners with pyrotechnic gas generators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.