ENTRANCE-DETERRING CAP FOR MANHOLE OPENINGS

摘要

An entrance-deterring cap for manhole openings in which an annular pan has an annular flange extending laterally from a skirt for supporting the pan on an upper edge of a frame in a manhole opening. A support member comprises an elongate bar disposed outwardly of the pan with a pair of plates rigidly attached at distal ends of the bar. A threaded stud is attached to the elongate bar for insertion through an opening in the bottom of the pan whereby the plates of the bar are exposed outwardly of the skirt with the distal ends of the plates near the flange of the pan. An elongate flexible strand attached to the threaded stud extends through an opening in the pan for coupling the bar with the pan. The pan is supported by the flange on an upper surface of the frame in a manhole opening and the elongate bar is suspended by the flexible strand below the pan in a throat of the manhole opening. The strand is pulled in order to move the threaded stud through the opening in the pan. A nut within the pan is threadedly engaged to the stud to secure the bar to the pan and thereby bear the distal ends of the plates against a lower surface of the frame for locking the pan to the frame of the manhole opening. A method of deterring entrance through manhole openings is disclosed.