Patent Number: 051280957
Section: abstract

The grab (1) comprises a tubular body (2) connected to a lifting means and a slide (3) mounted axially movably in the tubular body (2), so as to ensure the actuation of gripping pawls (20) carried by the tubular body (2). The tubular body (2) has a bell-shaped open end part (16), within which the slide (3) is connected to the inner surface of the tubular body over its entire periphery by means of an axially deformable gas-tight elastic member (30). The gripping pawls (20) are arranged within the bell-shaped end part (16) of the tubular element between the elastic member (30) ensuring its closure and its open end (16a). During the introduction of the lower part of the tubular body (2) into the liquid metal (8) in order to carry out the pick-up and displacement of an object (15), gas is trapped inside the bell (16) and forms a reserve, in which the gripping pawls (20) and their control means are located during the pick-up and displacement of the object (15) below the level (8a) of the liquid metal.