Abstract: A fuse block, particularly for printed circuits, consists of a small block of insulating material, having a "U" shape, to whose wings are locked two equal terminals, provided at the bottom with a coupling for printed circuit and at the top with two prongs designed to receive a head of a fuse, restrained by a small frame. From the small frame extend two wings shaped in such a way as to allow the easy insertion between themselves of the fuse and the subsequent elastic restraint of the fuse.

Abstract: A grating is fastened to the housing of a computer by threaded nuts and screws, having a truncated-cone head and passing through holes made on the grating, on the housing, and on the frame of an aspirator, as well as through truncated-cone shaped bushings, which are provided with extensions turned towards the center of the grating, so to remain below a portion of a metal net placed over the screws and kept in place by a cover snap-locked to the grating, so that the net is electrically connected with the housing.If the frame of the aspirator is made of plastic material, then an electric connector, is linked to one of the screw or nut, with a conductor connector with the housing.