Re-tightener with pyrotechnic propellant charge for safety-belt

Details Re-tightener with pyrotechnic propellant charge for safety-belt Re-tightener with pyrotechnic propellant charge for safety-belt

1979-04-02

1980-10-28

Jillions, John M.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

2421074R, 280807, A62B 3500, B65H 7548

Patent

active

042302889

ABSTRACT:
Retightener with a pyrotechnic propellant charge for automatic safety-belt wind-up devices having an energy converter, wherein in the event of danger the explosive pressure of the ignited propellant charge acts on a pullout element tightening the safety belt around the body of the vehicle passenger to be protected via a liquid buffer arranged between the propellant charge and a pull-back element. In accordance with the invention a turbine housing is disposed around the turbine wheel with a hollow space on one side between the turbine wheel and the wall of the housing to form a turbine pressure chamber. A receptacle containing liquid medium has its outlet opening into the turbine pressure vessel. The outlet of the receptacle is aligned substantially tangentially to the turbine wheel.

REFERENCES:
patent: 4151967 (1979-05-01), Lindblad

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