Rim for bath or sink drainage hole - consists of disc with sealing lip, and central cylindrical extension sleeve enclosing grooved screw onto which plug disc clips

摘要

The rim for the drainage hole in a bath or wash-basin comprises an apertured disc screwed into a central seating. The disc (S) has a sealing lip (13), the centre of the disc having an extension (17) in the form of a sleeve extending downwards towards the bottom (6) of the grille (3). The sleeve encloses the head (19) of the screw (5) or an extension shaft (21). The screw head (19) or its cylindrical extension (21) has two annular grooves (20, 22) in which the sleeve (17) of the (S) clips.