A device for indicating the correct tensioning of a restraining strap of a safety device

摘要

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 strap (12), at least one spring (22) for exerting on the movable element (20) an action opposing that of the pulling force on the strap (12) so as to prevent the movable element (20) from reaching the correct-tensioning position as long as the pulling force on the strap (12) is less than a given predetermined value, and display means (24; G, R) for supplying a signal indicative of the correct-tensioning condition of the strap (12) when the movable element (20) is in the said position.