Pretensioner testing apparatus and method

Details Pretensioner testing apparatus and method Pretensioner testing apparatus and method

2007-01-09

2007-01-09

Larkin, Daniel S. (Department: 2856)

Measuring and testing

Specimen model or analog

C073S865900

Reexamination Certificate

active

10824114

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.

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