Pretensioner in a safety belt system for vehicles

Details Pretensioner in a safety belt system for vehicles Pretensioner in a safety belt system for vehicles

1992-02-19

1994-03-01

Pape, Joseph D.

Land vehicles

Wheeled

Attachment

297480, B60R 2100

Patent

active

052900622

ABSTRACT:
In a pretensioner for safety belt systems in vehicles a mechanical drive having a pretensioned spring is provided. The spring is held by a trigger mechanism in its pretensioned state. For initiating a tightening operation the spring is released by the trigger mechanism. The vehicle-sensitive sensor mass of said trigger mechanism is formed substantially by the mass of the spring itself, that of a piston and a detent lever and the smaller mass of a guide tube which receives the spring and is guided translationally displaceably relatively to a common support structure of the pretensioner drive and of a fitting of the safety belt system.

REFERENCES:
patent: 4913497 (1990-04-01), Knabel et al.
patent: 5169173 (1992-12-01), Nishizawa

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