公开(公告)号：EP1877228A4

公开(公告)日：2008-11-26

申请号：EP05758758

申请日：2005-05-26

申请人： CROISDALE CHRISTOPHER ,  HORVATH JENO ,  MCKEE ROBERT W

发明人： CROISDALE CHRISTOPHER ,  HORVATH JENO ,  MCKEE ROBERT W

IPC分类号： B25F3/00

CPC分类号： F21V21/104 ,  B23B49/005 ,  B23B51/00 ,  B23B2251/02 ,  B25B27/143 ,  F16B23/0007

摘要： A drill bit is connected to a drill in a simple and rapid manner and used to drill a hole in a backing which may be of wood, plastic or other material in which threads can readily be formed. A threaded insert which has a slightly greater diameter than the hole is then connected to the drill bit in the same manner as the drill and driven by the drill into the hole. The insert forms matching threads in the walls of the hole so that the insert is threadably attached to the backing. A retainer from which a hook is suspended is formed in the insert to permit the hanging of fixtures on the insert.