Security device for shutter hooks

摘要

The security device comprises a lever (6) and a spring (8) mounted on a support plate (1) positioned above the end (4a) of the hook (2) after its engagement on the angled branch (5a) in order to avoid its being lifted. The lever and spring are arranged to be temporarily manually retracted an order to release the end and to be automatically released under the effect of the introduction of the end.