Today’s invention is a safety mechanism designed to protect all those of us who have been tempted to overload eg an engine hoist.
Instead of relying on the fading painted load markings on the arm, imagine if the arm could incorporate a torque wrench break mechanism. Try to lift something within say 10% of the safe limit and the torque wrench would ‘give’ making the characteristic click.
Electronic, or cam-over wrench designs could be employed to ensure that the lifting actually stops when the click is heard.
