The coupling system (5) comprises at least one first member (6) on which a second member (7) is slidable, step-adjusting means (26, 37a, 37b) for the position of the second member (7) on the first member (6) and a release device (46, 56) carried by the sec...

A constraint device (1) for the releasable fastening of a child safety seat (2) to a motor vehicle seat (3) is described, equipped with fastening means (5) for coupling with matching means (14) carried by the seat (3); control means (6) operatively connect...

The indicating device (10) comprises: a movable element (20) operatively associated with the strap (12) so as to be moved thereby towards a position which is indicative of the correct tensioning condition as a result of the pulling force applied to the str...