Delayed action release for vehicle safety belt - has inertia of rotating weights driving multiplier gearing and release rack under pull

摘要

The release unit comprises two pairs of weights (3), each pair being fixed to an arm. The centre point of this arm has a spur gear, forming a pivot and meshing with a double pinion gear (2). One set is positioned each side of a rack (1), retained by a spring. The smaller gear of each double pinion meshes with gear teeth each side of the rack and, when this latter is pulled continually rotates the gearing against the inertia of the weights until the unit is released. A short pull has no effect.