Drive device for restraining systems in motor vehicles

Details Drive device for restraining systems in motor vehicles Drive device for restraining systems in motor vehicles

1989-06-15

1990-05-22

Rice, Kenneth R.

Land vehicles

Wheeled

Attachment

280736, 297480, B60R 2110

Patent

active

049271750

ABSTRACT:
The drive device of lightweight construction for restraining systems in motor vehicles, in particular safety-belt tightening means, comprises a pyrotechnical gas generator, the gases of which act on a working chamber. The working chamber comprises an outwardly leading relief path which is sealed by a closure element of a material which at a temperature which lies above the operating temperature range of the gas generator but which at the most is equal to the self-igniting temperature of the gas generator softens at least to such an extent that the closure element on ignition of the gas generator frees the relief path but which at temperatures beneath the operating temperature range of the gas generator has a mechanical strength such that the relief path remains sealed by the closure element under the gas action.

REFERENCES:
patent: 4385775 (1983-05-01), Shimogawa et al.
patent: 4423846 (1984-01-01), Fohl
patent: 4458921 (1984-07-01), Chiba et al.
patent: 4573322 (1986-03-01), Fohl
patent: 4789185 (1988-12-01), Fohl

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